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Heidelberg

$302+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FRA
Mar 17 — Mar 241
Tue 3/17
Tue 3/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Heidelberg are usually found in January or November, booked 19 days in advance, depart on a Monday or Sunday and return on a Sunday

Cheap 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 February 15, 2026.

This oojo deal was found by Cheapflights users on 2/11. 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 5/75:40 pm
SEA
-
FRA
Nonstop10h 05m
Condor
Mon 5/112:15 pm
FRA
-
SEA
Nonstop10h 25m
Condor
Deal found 2/11$656
This FlightHub deal was found by Cheapflights users on 2/11. 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.
Fri 9/45:40 pm
SEA
-
FRA
Nonstop10h 05m
Condor
Tue 9/152:15 pm
FRA
-
SEA
Nonstop10h 25m
Condor
Deal found 2/11$657
This AirNGo deal was found by Cheapflights users on 2/13. 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.
Thu 3/57:10 am
SEA
-
FRA
2 stops22h 20m
Scandinavian Airlines
Mon 3/98:30 pm
FRA
-
SEA
2 stops33h 40m
Scandinavian Airlines
Deal found 2/13$659
This Condor deal was found by Cheapflights users on 2/11. 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.
Mon 3/96:40 pm
SEA
-
FRA
Nonstop10h 10m
Multiple Airlines
Thu 3/1911:15 am
FRA
-
SEA
1 stop18h 53m
Multiple Airlines
Deal found 2/11$660
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:40 pm
SEA
-
FRA
Nonstop10h 05m
Condor
Wed 10/212:15 pm
FRA
-
SEA
Nonstop10h 25m
Condor
Deal found 2/11$661
This Mytrip deal was found by Cheapflights users on 2/14. 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.
Sat 7/255:40 pm
SEA
-
FRA
Nonstop10h 05m
Condor
Mon 8/242:15 pm
FRA
-
SEA
Nonstop10h 25m
Condor
Deal found 2/14$662
This KAYAK deal was found by Cheapflights users on 2/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:55 pm
SEA
-
FRA
2 stops58h 40m
Scandinavian Airlines
Fri 10/98:30 pm
FRA
-
SEA
1 stop26h 15m
Scandinavian Airlines
Deal found 2/14$664
This Trip.com deal was found by Cheapflights users on 2/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:40 pm
SEA
-
FRA
Nonstop10h 05m
Condor
Tue 9/82:15 pm
FRA
-
SEA
Nonstop10h 25m
Condor
Deal found 2/11$665
This Booking.com deal was found by Cheapflights users on 2/13. 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.
Sat 2/215:40 pm
SEA
-
FRA
Nonstop10h 10m
Condor
Sat 3/71:55 pm
FRA
-
SEA
Nonstop10h 45m
Condor
Deal found 2/13$666
This Booking.com deal was found by Cheapflights users on 2/13. 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.
Sat 3/75:40 pm
SEA
-
FRA
Nonstop10h 10m
Condor
Sat 3/141:55 pm
FRA
-
SEA
Nonstop10h 45m
Condor
Deal found 2/13$667
This Booking.com deal was found by Cheapflights users on 2/11. 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.
Sat 2/285:40 pm
SEA
-
FRA
Nonstop10h 10m
Condor
Mon 3/21:55 pm
FRA
-
SEA
Nonstop10h 45m
Condor
Deal found 2/11$668
This FlightHub deal was found by Cheapflights users on 2/14. 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 9/153:55 pm
SEA
-
FRA
1 stop13h 00m
Multiple Airlines
Thu 9/248:30 pm
FRA
-
SEA
1 stop26h 15m
Multiple Airlines
Deal found 2/14$669

Find flight deals from Seattle to Heidelberg

Keep the following information in mind while searching for Seattle to Heidelberg flight deals. Data was last updated February 15, 2026.

Round-trip from

$656
(oojo)

One-way from

$302
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$734
From Seattle/Tacoma Intl to Heidelberg
Search Deals
One-way flight from Seattle/Tacoma Intl to Heidelberg
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 15, 2026.
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

Mon 3/9

6:40 pm-12:50 pm

Nonstop10h 10m

Frankfurt am Main

Thu 3/19

11:15 am-10:08 pm

1 stop18h 53m

$660

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 4/20

5:40 pm-12:45 pm

Nonstop10h 05m

Frankfurt am Main

Mon 5/4

11:40 am-10:18 pm

1 stop19h 38m

$700

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Wed 7/15

11:41 am-12:40 pm

1 stop15h 59m

Frankfurt am Main

Wed 8/19

2:15 pm-3:40 pm

Nonstop10h 25m

$720

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 3/2

5:40 pm-12:50 pm

Nonstop10h 10m

Frankfurt am Main

Mon 3/9

11:15 am-10:12 pm

1 stop18h 57m

$720

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Fri 4/17

7:15 am-2:35 pm

2 stops22h 20m

Frankfurt am Main

Sun 4/26

3:20 pm-11:51 pm

2 stops41h 31m

$742

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 4/21

7:00 am-2:35 pm

2 stops22h 35m

Frankfurt am Main

Sun 4/26

3:20 pm-11:51 pm

2 stops41h 31m

$742

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sun 4/19

7:00 am-2:35 pm

2 stops22h 35m

Frankfurt am Main

Tue 4/28

3:20 pm-11:51 pm

2 stops41h 31m

$742

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sat 4/18

5:40 pm-12:45 pm

Nonstop10h 05m

Frankfurt am Main

Fri 5/15

2:15 pm-3:40 pm

Nonstop10h 25m

$750

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sun 7/26

5:40 pm-12:45 pm

Nonstop10h 05m

Frankfurt am Main

Wed 9/9

2:15 pm-3:40 pm

Nonstop10h 25m

$750

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Tue 8/4

3:55 pm-7:45 pm

1 stop18h 50m

Frankfurt am Main

Thu 8/20

8:30 pm-1:45 pm

1 stop26h 15m

$770

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Showing 1-10 of 22 results
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2
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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 February 13, 2026.

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 19 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 $467). Flying from Seattle to Heidelberg in June is currently the most expensive (average of $715). 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 February 15, 2026.

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.

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 February 15, 2026.
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
11,885 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,885 reviews
Alaska Airlines
8.0
Very good
11,885 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,293 reviews
Alaska Airlines
8.0
Very good
11,885 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Icelandair
7.1
Good
614 reviews
Alaska Airlines
8.0
Very good
11,885 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Lufthansa
6.8
Okay
7,786 reviews
Alaska Airlines
8.0
Very good
11,885 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Condor
6.4
Okay
400 reviews
Alaska Airlines
8.0
Very good
11,885 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 is 1 flight from Seattle/Tacoma Intl to Heidelberg per day from 8 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 ($247), Scandinavian Airlines ($279), and Condor ($340).

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

    The top 3 most reliable airlines when flying from Seattle to Heidelberg are Air Canada (65%), United Airlines (65%) and Lufthansa (65%).

  • What are the cheapest flights from Seattle to Heidelberg?

    On average you can expect to pay $1,218 for a flight from Seattle to Heidelberg. The cheapest flight overall is $354 while the most popular route, (Seattle/Tacoma Intl - Frankfurt am Main) is currently priced at $568.

  • 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 $467). Flying from Seattle to Heidelberg in June is currently the most expensive (average of $715). 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

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Top 8 airlines flying from Seattle to Heidelberg

Discover the top 8 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 February 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$479Average$658FlexibilityNo cancel feeOn-time76%
CondorCheapest$546Average$756FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$552Average$724FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$595Average$849FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$595Average$983FlexibilityNo cancel feeOn-time70%
DeltaCheapest$606Average$736FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$639Average$887FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$802Average$1,032FlexibilityNo cancel feeOn-time75%

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