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Heidelberg

$298+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FRA
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
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 August 18, 2025.

Round-trip from

$576
(Expedia)

One-way from

$298
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$798
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. 3% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
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 August 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 August 18, 2025.

This Expedia deal was found by Cheapflights users on 8/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:35 pmSEA - FRA
Nonstop10h 05mCondor
Thu 9/251:45 pmFRA - SEA
Nonstop10h 20mCondor
Deal found 8/18$576
This Scandinavian Airlines deal was found by Cheapflights users on 8/17. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:20 pmSEA - FRA
1 stop13h 20mScandinavian Airlines
Thu 10/23:20 pmFRA - SEA
1 stop31h 40mScandinavian Airlines
Deal found 8/17$580
This FlightHub deal was found by Cheapflights users on 8/17. 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.
Sat 11/82:35 pmSEA - FRA
1 stop12h 30mIcelandair
Fri 2/61:05 pmFRA - SEA
1 stop12h 55mIcelandair
Deal found 8/17$582
This Gotogate deal was found by Cheapflights users on 8/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:05 pmSEA - FRA
Nonstop10h 05mCondor
Wed 9/31:45 pmFRA - SEA
Nonstop10h 20mCondor
Deal found 8/17$584
This Booking.com deal was found by Cheapflights users on 8/16. 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 8/195:25 pmSEA - FRA
Nonstop10h 05mCondor
Wed 9/101:45 pmFRA - SEA
Nonstop10h 20mCondor
Deal found 8/16$585
This Expedia deal was found by Cheapflights users on 8/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:35 pmSEA - FRA
Nonstop10h 05mMultiple Airlines
Wed 9/2411:40 amFRA - SEA
1 stop17h 57mMultiple Airlines
Deal found 8/17$586
This Expedia deal was found by Cheapflights users on 8/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/138:00 amSEA - FRA
1 stop19h 40mMultiple Airlines
Wed 10/2211:40 amFRA - SEA
1 stop16h 51mMultiple Airlines
Deal found 8/18$590
This Gurufare deal was found by Cheapflights users on 8/18. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/273:35 pmSEA - FRA
1 stop12h 30mIcelandair
Sat 11/151:05 pmFRA - SEA
1 stop12h 55mIcelandair
Deal found 8/18$591
This Flighttix deal was found by Cheapflights users on 8/16. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/218:08 amSEA - FRA
1 stop19h 32mMultiple Airlines
Wed 9/311:40 amFRA - SEA
1 stop16h 34mMultiple Airlines
Deal found 8/16$593
This Expedia deal was found by Cheapflights users on 8/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/175:05 pmSEA - FRA
Nonstop10h 05mMultiple Airlines
Wed 10/111:40 amFRA - SEA
1 stop17h 57mMultiple Airlines
Deal found 8/17$596
This Condor deal was found by Cheapflights users on 8/16. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/308:08 amSEA - FRA
1 stop19h 32mMultiple Airlines
Tue 10/71:45 pmFRA - SEA
Nonstop10h 20mMultiple Airlines
Deal found 8/16$597

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 August 18, 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

Tue 11/25

2:35 pm-12:05 pm

1 stop12h 30m

Frankfurt am Main

Wed 12/3

1:05 pm-5:00 pm

1 stop12h 55m

$580

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Wed 10/8

12:35 pm-12:40 pm

1 stop15h 05m

Frankfurt am Main

Wed 10/22

12:30 pm-11:01 pm

1 stop19h 31m

$580

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Wed 9/24

4:20 pm-2:40 pm

1 stop13h 20m

Frankfurt am Main

Thu 10/2

3:20 pm-2:00 pm

1 stop31h 40m

$580

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 11/25

2:35 pm-12:05 pm

1 stop12h 30m

Frankfurt am Main

Thu 12/4

1:05 pm-5:00 pm

1 stop12h 55m

$580

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 9/30

8:08 am-12:40 pm

1 stop19h 32m

Frankfurt am Main

Tue 10/7

11:40 am-7:31 pm

1 stop16h 51m

$585

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Wed 11/26

2:35 pm-12:05 pm

1 stop12h 30m

Frankfurt am Main

Mon 12/8

1:05 pm-5:00 pm

1 stop12h 55m

$586

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sun 9/21

4:20 pm-2:40 pm

1 stop13h 20m

Frankfurt am Main

Thu 10/2

3:20 pm-2:00 pm

1 stop31h 40m

$590

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 11/10

2:35 pm-12:05 pm

1 stop12h 30m

Frankfurt am Main

Thu 2/5

1:05 pm-5:00 pm

1 stop12h 55m

$591

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 9/16

5:05 pm-12:10 pm

Nonstop10h 05m

Frankfurt am Main

Tue 9/30

11:40 am-7:14 pm

1 stop16h 34m

$595

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 10/27

3:35 pm-12:05 pm

1 stop12h 30m

Frankfurt am Main

Mon 11/17

1:05 pm-5:00 pm

1 stop12h 55m

$598

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 19 results
1
2

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 August 8, 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 $1,091). 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 August 18, 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 August 18, 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).

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 August 18, 2025.
Read reviews from past customers who have flown Alaska Airlines, United Airlines, and Icelandair from Seattle to Heidelberg. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Icelandair
7.0
Good
527 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Lufthansa
6.8
Okay
7,330 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Condor
6.3
Okay
354 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 10 different airlines.

  • How long is the flight from Seattle to Heidelberg?

    Icelandair and Scandinavian Airlines can get you from Seattle to Heidelberg in just under 12h 30m. Your travel time can differ by up to 50m. There are 5089 mi between Seattle and Heidelberg. This flight may include one or multiple stops.

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

    The top 3 most reliable airlines when flying from Seattle to Heidelberg are Condor (70%), Alaska Airlines (70%) and Air Canada (68%).

  • What are the cheapest flights from Seattle to Heidelberg?

    On average you can expect to pay $1,802 for a flight from Seattle to Heidelberg. The cheapest flight overall is $403 while the most popular route, (Seattle/Tacoma Intl - Frankfurt am Main) is currently priced at $529.

  • 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 $1,091). 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$466Average$700FlexibilityNo cancel feeOn-time76%
CondorCheapest$510Average$768FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$555Average$889FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$559Average$724FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$595Average$820FlexibilityNo cancel feeOn-time76%
DeltaCheapest$606Average$1,031FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$655Average$1,062FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$670Average$887FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$749Average$795FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$800Average$1,044FlexibilityNo cancel feeOn-time75%

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