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Heidelberg

$268+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FRA
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
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 64 days in advance, depart on a Sunday or Monday and return on a Sunday

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 November 6, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Wed 11/192:35 pmSEA - FRA
1 stop12h 30mIcelandair
Sun 11/231:05 pmFRA - SEA
1 stop12h 55mIcelandair
Deal found 11/4$582
This Flighttix deal was found by Cheapflights users on 11/6. 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.
Sat 11/85:40 pmSEA - FRA
Nonstop10h 10mMultiple Airlines
Sat 11/2211:15 amFRA - SEA
1 stop20h 09mMultiple Airlines
Deal found 11/6$588
This KAYAK deal was found by Cheapflights users on 11/3. 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.
Mon 11/2412:40 pmSEA - FRA
2 stops22h 05mScandinavian Airlines
Sun 12/78:30 pmFRA - SEA
2 stops34h 44mScandinavian Airlines
Deal found 11/3$589
This Travelocity deal was found by Cheapflights users on 11/6. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:40 pmSEA - FRA
Nonstop10h 10mCondor
Thu 12/111:55 pmFRA - SEA
Nonstop10h 45mCondor
Deal found 11/6$590
This Booking.com deal was found by Cheapflights users on 11/5. 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.
Mon 12/18:05 pmSEA - FRA
1 stop14h 15mAer Lingus
Wed 12/1010:45 amFRA - SEA
1 stop16h 35mAer Lingus
Deal found 11/5$591
This FlightHub deal was found by Cheapflights users on 11/4. 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 11/112:35 pmSEA - FRA
1 stop12h 30mIcelandair
Mon 12/151:05 pmFRA - SEA
1 stop12h 55mIcelandair
Deal found 11/4$592
This AirNGo deal was found by Cheapflights users on 11/4. 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.
Fri 11/146:00 amSEA - FRA
1 stop16h 50mVirgin Atlantic
Thu 11/279:50 amFRA - SEA
1 stop23h 09mVirgin Atlantic
Deal found 11/4$593
This FlightHub deal was found by Cheapflights users on 11/4. 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.
Thu 12/410:40 amSEA - FRA
2 stops18h 50mScandinavian Airlines
Thu 12/118:30 pmFRA - SEA
2 stops34h 53mScandinavian Airlines
Deal found 11/4$594
This KAYAK deal was found by Cheapflights users on 11/6. 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.
Fri 12/57:10 amSEA - FRA
2 stops27h 35mScandinavian Airlines
Mon 12/88:30 pmFRA - SEA
2 stops34h 53mScandinavian Airlines
Deal found 11/6$597
This KAYAK deal was found by Cheapflights users on 11/3. 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.
Mon 11/2412:40 pmSEA - FRA
2 stops22h 05mScandinavian Airlines
Mon 12/88:30 pmFRA - SEA
2 stops34h 53mScandinavian Airlines
Deal found 11/3$599
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Sun 11/163:10 pmSEA - FRA
1 stop15h 50mLufthansa
Sun 11/2310:40 amFRA - SEA
1 stop17h 36mLufthansa
Deal found 11/4$600

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 November 6, 2025.

Round-trip from

$583
(FlightHub)

One-way from

$268
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$679
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. 5% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 6, 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 12/2

12:45 pm-7:45 pm

2 stops22h 00m

Frankfurt am Main

Tue 12/9

8:30 pm-10:23 pm

2 stops34h 53m

$597

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 3/2

11:31 am-2:30 pm

2 stops17h 59m

Frankfurt am Main

Sat 3/14

10:35 am-10:16 pm

2 stops19h 41m

$639

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sat 4/25

1:33 am-8:45 am

1 stop22h 12m

Frankfurt am Main

Sat 5/9

11:30 am-4:00 pm

1 stop13h 30m

$642

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 3/16

7:50 am-8:40 am

1 stop16h 50m

Frankfurt am Main

Sat 3/28

2:15 pm-3:50 pm

1 stop33h 35m

$645

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Thu 11/27

6:00 am-11:15 am

2 stops20h 15m

Frankfurt am Main

Tue 12/9

11:50 am-11:50 am

1 stop33h 00m

$648

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Wed 3/4

6:00 am-11:15 am

2 stops20h 15m

Frankfurt am Main

Wed 3/18

6:55 am-12:35 pm

1 stop13h 40m

$648

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sun 3/15

9:55 pm-11:15 am

2 stops29h 20m

Frankfurt am Main

Wed 3/25

10:15 am-12:35 pm

1 stop34h 20m

$648

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sun 3/1

6:05 am-11:15 am

2 stops20h 10m

Frankfurt am Main

Wed 4/1

7:00 am-3:50 pm

1 stop17h 50m

$648

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 2/23

7:10 am-11:15 am

2 stops19h 05m

Frankfurt am Main

Sat 3/7

6:55 am-11:35 am

1 stop13h 40m

$649

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sun 1/11

11:10 pm-7:50 am

1 stop23h 40m

Frankfurt am Main

Sun 1/18

7:05 am-1:25 pm

1 stop15h 20m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 22 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 October 31, 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 64 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 $464). Flying from Seattle to Heidelberg in June is currently the most expensive (average of $730). 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 November 6, 2025.

It’s optimal to fly from Seattle to Heidelberg in the afternoon. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight at noon.

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 Monday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 6, 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
11,247 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,247 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
9,007 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Icelandair
7.1
Good
572 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Lufthansa
6.8
Okay
7,558 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Condor
6.4
Okay
387 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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 3 flights from Seattle/Tacoma Intl to Heidelberg per day from 9 different airlines.

  • How long is the flight from Seattle to Heidelberg?

    Scandinavian Airlines and Delta can get you from Seattle to Heidelberg in just under 16h 50m. Your travel time can differ by up to 5h 10m. 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 Air Canada (76%), United Airlines (76%) and Lufthansa (76%).

  • What are the cheapest flights from Seattle to Heidelberg?

    On average you can expect to pay $1,556 for a flight from Seattle to Heidelberg. The cheapest flight overall is $440 while the most popular route, (Seattle/Tacoma Intl - Frankfurt am Main) is currently priced at $528.

  • 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 $464). Flying from Seattle to Heidelberg in June is currently the most expensive (average of $730). 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 9 airlines flying from Seattle to Heidelberg

Discover the top 9 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$466Average$700FlexibilityNo cancel feeOn-time76%
CondorCheapest$530Average$774FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$559Average$749FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$595Average$840FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$602Average$945FlexibilityNo cancel feeOn-time70%
DeltaCheapest$606Average$1,245FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$653Average$929FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$707Average$823FlexibilityNo cancel feeOn-time77%
Alaska AirlinesCheapest$817Average$1,036FlexibilityNo cancel feeOn-time75%

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