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Heidelberg

$340+ Cheap flights from Seattle (SEA) to Heidelberg, Germany

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FRA
Jun 27 — Jul 41
Fri 6/27
Fri 7/4
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Heidelberg are usually found in January or February, booked 69 days in advance, depart on a Sunday or Monday and return on a Sunday

Cheap flight deals from Seattle to Heidelberg

Keep the following information in mind while searching for Seattle to Heidelberg flight deals. Data was last updated June 22, 2025.

Round-trip from

$630
(oojo)

One-way from

$340
(FlightHub)

Popular in

December

Cheapest in

January

Average price

$1,035
From Seattle/Tacoma Intl to Heidelberg
Search Deals
One-way flight from Seattle/Tacoma Intl to Heidelberg
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Highest demand for flights based on searches. 2% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Seattle to Heidelberg

Cheapest flights from Seattle to Heidelberg
Explore the most affordable flight options available from Seattle to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 22, 2025.

This oojo deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:35 pmSEA - FRA
1 stop12h 30mIcelandair
Wed 11/191:05 pmFRA - SEA
1 stop12h 55mIcelandair
Deal found 6/20$630
This CheapOair deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:20 pmSEA - FRA
Nonstop10h 10mCondor
Mon 12/151:05 pmFRA - SEA
Nonstop10h 45mCondor
Deal found 6/20$631
This oojo deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/234:00 pmSEA - FRA
1 stop13h 40mScandinavian Airlines
Tue 9/163:20 pmFRA - SEA
1 stop31h 40mScandinavian Airlines
Deal found 6/20$634
This Mytrip deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:20 amSEA - FRA
2 stops19h 45mMultiple Airlines
Wed 8/208:40 pmFRA - SEA
2 stops33h 01mMultiple Airlines
Deal found 6/21$637
This AirNGo deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/57:20 amSEA - FRA
1 stop15h 50mAir Canada
Tue 8/265:35 pmFRA - SEA
1 stop36h 06mAir Canada
Deal found 6/21$687
This Booking.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:35 pmSEA - FRA
1 stop15h 20mAer Lingus
Tue 8/2610:55 amFRA - SEA
1 stop15h 55mAer Lingus
Deal found 6/20$700
This FlightHub deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/182:07 pmSEA - FRA
1 stop31h 58mLufthansa
Thu 12/49:45 amFRA - SEA
2 stops32h 31mLufthansa
Deal found 6/22$733
This oojo deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/77:10 pmSEA - FRA
1 stop16h 50mTurkish Airlines
Thu 8/147:05 amFRA - SEA
1 stop19h 10mTurkish Airlines
Deal found 6/21$738
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/56:45 amSEA - FRA
2 stops20h 00mUnited Airlines
Tue 8/265:35 pmFRA - SEA
1 stop36h 06mUnited Airlines
Deal found 6/21$744
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/99:30 pmSEA - FRA
1 stop26h 25mDelta
Wed 8/2011:50 amFRA - SEA
1 stop17h 24mDelta
Deal found 6/21$750
This SWISS deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/111:45 pmSEA - FRA
2 stops20h 20mSWISS
Thu 8/218:45 pmFRA - SEA
2 stops30h 51mSWISS
Deal found 6/21$769
This Virgin Atlantic deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/285:30 amSEA - FRA
2 stops18h 10mVirgin Atlantic
Wed 8/1311:50 amFRA - SEA
2 stops19h 17mVirgin Atlantic
Deal found 6/21$789

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Heidelberg that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 22, 2025.
Use the filters below to find and compare flights from Seattle to Heidelberg that are best for you.

Fly from

Seattle

Fly to

Heidelberg

Route

Depart

Return

Price

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Wed 11/12

2:35 pm-12:05 pm

1 stop12h 30m

Frankfurt am Main

Wed 11/19

1:05 pm-5:00 pm

1 stop12h 55m

$630

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 12/8

5:20 pm-12:30 pm

Nonstop10h 10m

Frankfurt am Main

Mon 12/15

1:05 pm-2:50 pm

Nonstop10h 45m

$631

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sat 8/23

4:00 pm-2:40 pm

1 stop13h 40m

Frankfurt am Main

Tue 9/16

3:20 pm-2:00 pm

1 stop31h 40m

$634

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 8/11

7:20 am-12:05 pm

2 stops19h 45m

Frankfurt am Main

Wed 8/20

8:40 pm-8:41 pm

2 stops33h 01m

$637

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 8/5

7:20 am-8:10 am

1 stop15h 50m

Frankfurt am Main

Tue 8/26

5:35 pm-8:41 pm

1 stop36h 06m

$687

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 8/12

7:35 pm-7:55 pm

1 stop15h 20m

Frankfurt am Main

Tue 8/26

10:55 am-5:50 pm

1 stop15h 55m

$700

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 11/18

2:07 pm-7:05 am

1 stop31h 58m

Frankfurt am Main

Thu 12/4

9:45 am-9:16 am

2 stops32h 31m

$733

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Thu 8/7

7:10 pm-9:00 pm

1 stop16h 50m

Frankfurt am Main

Thu 8/14

7:05 am-5:15 pm

1 stop19h 10m

$738

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 8/5

6:45 am-11:45 am

2 stops20h 00m

Frankfurt am Main

Tue 8/26

5:35 pm-8:41 pm

1 stop36h 06m

$744

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sat 8/9

11:30 pm-8:55 am

1 stop24h 25m

Frankfurt am Main

Fri 8/22

10:40 am-7:00 pm

1 stop17h 20m

$750

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 26 results
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Best time to book a flight from Seattle to Heidelberg

Have a flexible travel schedule? Discover the best time to fly to Heidelberg from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Heidelberg

How far ahead should I book a flight from Seattle to Heidelberg?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Heidelberg. Price data was last updated on June 20, 2025.

The price you pay for your flight from Seattle to Heidelberg may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Heidelberg?

Currently, January is the cheapest month in which you can book a flight from Seattle to Heidelberg (average of $729). Flying from Seattle to Heidelberg in June is currently the most expensive (average of $1,087). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to HE1?

Find hourly flight availability from Seattle to Heidelberg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 22, 2025.

When flying from Seattle to Heidelberg, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Seattle to Heidelberg?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Heidelberg. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Heidelberg flight should consider departing on Sunday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Heidelberg

Explore weekly flight availability from Seattle to Heidelberg. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 22, 2025.

The most flights from SEA to HE1 are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Heidelberg by month

Plan your trip to Heidelberg by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Heidelberg ranges from 1.6 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Heidelberg when rainfall is around 1.6 in.

Temperature in Heidelberg by month

Plan your trip to Heidelberg by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Heidelberg, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Heidelberg

Get insights into the airlines that provide service to Heidelberg. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heidelberg. Reviews last updated June 22, 2025.
Peruse reviews from past customers who have flown with Delta, Alaska Airlines and SWISS from Seattle to Heidelberg to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,963 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,963 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Alaska Airlines
8.0
Very good
10,000 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,644 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,829 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
653 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Heidelberg. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Heidelberg?

    If you book a flight to Heidelberg from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 4 flights from Seattle/Tacoma Intl to Heidelberg per day from 11 different airlines.

  • What are the cheapest airlines to fly from Seattle to Heidelberg one-way?

    The cheapest airlines for a one-way flight from Seattle to Heidelberg are Icelandair ($340), TAP AIR PORTUGAL ($357), and Scandinavian Airlines ($376).

  • What are the most reliable airlines from Seattle to Heidelberg?

    The top 3 most reliable airlines when flying from Seattle to Heidelberg are Condor (72%), Alaska Airlines (72%) and Air Canada (70%).

  • What are the cheapest flights from Seattle to Heidelberg?

    On average you can expect to pay $1,713 for a flight from Seattle to Heidelberg. The cheapest flight overall is $359 while the most popular route, (Seattle/Tacoma Intl - Frankfurt am Main) is currently priced at $557.

  • Can I find deals for flights from Seattle to Heidelberg that include hotel bookings?

    Yes. In addition to deals on Seattle to Heidelberg flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Heidelberg?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Heidelberg.

  • Can I find deals for business class flights from Seattle to Heidelberg?

    Yes. Cheapflights offers flight deals from Seattle to Heidelberg by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Heidelberg?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Heidelberg (average of $729). Flying from Seattle to Heidelberg in June is currently the most expensive (average of $1,087). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Seattle to Heidelberg

Discover the top 10 airlines that operate flights from Seattle to Heidelberg. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$466Average$697FlexibilityNo cancel feeOn-time76%
CondorCheapest$519Average$783FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$555Average$880FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$559Average$724FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$595Average$835FlexibilityNo cancel feeOn-time76%
DeltaCheapest$606Average$1,019FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$630Average$718FlexibilityNo cancel feeOn-time71%
KLMCheapest$665Average$1,062FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$672Average$871FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$749Average$768FlexibilityNo cancel feeOn-time67%

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