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Heidelberg

$278+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FRA
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
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 October 16, 2025.

This Expedia deal was found by Cheapflights users on 10/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:40 pmSEA - FRA
Nonstop10h 10mMultiple Airlines
Thu 11/2011:15 amFRA - SEA
1 stop17h 58mMultiple Airlines
Deal found 10/16$580
This Gotogate deal was found by Cheapflights users on 10/15. 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.
Mon 11/35:40 pmSEA - FRA
Nonstop10h 10mCondor
Mon 11/101:55 pmFRA - SEA
Nonstop10h 45mCondor
Deal found 10/15$581
This lastminute.com deal was found by Cheapflights users on 10/15. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:05 pmSEA - FRA
Nonstop10h 05mCondor
Sun 11/21:55 pmFRA - SEA
Nonstop10h 45mCondor
Deal found 10/15$583
This Condor deal was found by Cheapflights users on 10/15. 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 10/205:05 pmSEA - FRA
Nonstop10h 05mMultiple Airlines
Fri 10/3111:15 amFRA - SEA
1 stop18h 56mMultiple Airlines
Deal found 10/15$584
This CheapOair deal was found by Cheapflights users on 10/15. 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.
Wed 10/225:05 pmSEA - FRA
Nonstop10h 05mMultiple Airlines
Mon 10/2711:40 amFRA - SEA
1 stop18h 20mMultiple Airlines
Deal found 10/15$590
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Wed 11/122:35 pmSEA - FRA
2 stops19h 45mMultiple Airlines
Wed 11/197:20 amFRA - SEA
2 stops18h 40mMultiple Airlines
Deal found 10/15$594
This Flighttix deal was found by Cheapflights users on 10/16. 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 10/238:00 amSEA - FRA
1 stop19h 40mMultiple Airlines
Thu 11/61:55 pmFRA - SEA
Nonstop10h 45mMultiple Airlines
Deal found 10/16$595
This FlightHub deal was found by Cheapflights users on 10/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:05 pmSEA - FRA
Nonstop10h 05mCondor
Sun 10/261:55 pmFRA - SEA
Nonstop10h 45mCondor
Deal found 10/16$597
This Expedia deal was found by Cheapflights users on 10/15. 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.
Thu 10/165:05 pmSEA - FRA
Nonstop10h 05mMultiple Airlines
Thu 10/2311:45 amFRA - SEA
1 stop17h 05mMultiple Airlines
Deal found 10/15$600
This lastminute.com deal was found by Cheapflights users on 10/15. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:05 pmSEA - FRA
Nonstop10h 05mMultiple Airlines
Thu 10/3011:40 amFRA - SEA
1 stop18h 20mMultiple Airlines
Deal found 10/15$602
This Flighttix deal was found by Cheapflights users on 10/15. 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.
Tue 10/2112:35 pmSEA - FRA
1 stop15h 05mMultiple Airlines
Fri 10/241:45 pmFRA - SEA
Nonstop10h 20mMultiple Airlines
Deal found 10/15$607
This Expedia deal was found by Cheapflights users on 10/15. 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.
Sat 10/185:15 pmSEA - FRA
Nonstop10h 05mMultiple Airlines
Tue 10/2811:40 amFRA - SEA
1 stop18h 20mMultiple Airlines
Deal found 10/15$610

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 October 16, 2025.

Round-trip from

$571
(Booking.com)

One-way from

$278
(FlightHub)

Popular in

December

Cheapest in

January

Average price

$700
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 October 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 October 16, 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

Mon 3/2

2:00 pm-7:45 pm

2 stops20h 45m

Frankfurt am Main

Mon 3/9

8:30 pm-10:16 pm

2 stops33h 46m

$576

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Fri 2/6

2:00 pm-7:45 pm

2 stops20h 45m

Frankfurt am Main

Sun 3/22

8:30 pm-10:16 pm

2 stops33h 46m

$587

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Fri 1/30

2:00 pm-7:45 pm

2 stops20h 45m

Frankfurt am Main

Sun 3/22

8:30 pm-10:16 pm

2 stops33h 46m

$587

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 2/2

12:00 pm-9:50 am

2 stops36h 50m

Frankfurt am Main

Fri 2/6

10:30 am-10:25 pm

2 stops20h 55m

$589

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sat 1/31

12:00 pm-9:50 am

2 stops36h 50m

Frankfurt am Main

Mon 2/9

8:30 pm-10:16 pm

2 stops34h 46m

$589

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Mon 3/2

2:00 pm-7:45 pm

2 stops20h 45m

Frankfurt am Main

Sat 3/14

7:55 am-10:16 pm

2 stops22h 21m

$640

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Thu 11/13

2:11 pm-7:45 pm

2 stops20h 34m

Frankfurt am Main

Thu 11/20

10:20 am-10:59 pm

2 stops21h 39m

$640

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Fri 12/5

10:40 am-2:30 pm

2 stops18h 50m

Frankfurt am Main

Wed 12/10

7:55 am-10:22 pm

2 stops23h 27m

$669

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Thu 3/12

10:55 am-2:30 pm

2 stops19h 35m

Frankfurt am Main

Thu 4/16

7:20 am-10:17 pm

2 stops23h 57m

$710

SeattleFrankfurt am Main

SEA - FRA

SEAFRA

Seattle/Tacoma Intl

Sat 11/15

11:15 am-2:30 pm

2 stops18h 15m

Frankfurt am Main

Sat 11/22

7:55 am-10:59 pm

2 stops24h 04m

$733

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 20 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 October 10, 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 October 16, 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.

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 October 16, 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 October 16, 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
11,103 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
11,103 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
8,982 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
7.0
Good
556 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
7,497 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
378 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

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 4 flights from Seattle/Tacoma Intl to Heidelberg per day from 10 different airlines.

  • How long is the flight from Seattle to Heidelberg?

    Scandinavian Airlines can get you from Seattle to Heidelberg in just under 20h 45m. Your travel time can differ by up to . There are 5089 mi between Seattle and Heidelberg.

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

    The top 3 most reliable airlines when flying from Seattle to Heidelberg are Condor (73%), Alaska Airlines (73%) and Air Canada (65%).

  • What are the cheapest flights from Seattle to Heidelberg?

    On average you can expect to pay $1,491 for a flight from Seattle to Heidelberg. The cheapest flight overall is $427 while the most popular route, (Seattle/Tacoma Intl - Frankfurt am Main) is currently priced at $503.

  • 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 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$466Average$694FlexibilityNo cancel feeOn-time76%
CondorCheapest$527Average$775FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$559Average$743FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$595Average$852FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$602Average$995FlexibilityNo cancel feeOn-time70%
DeltaCheapest$606Average$1,245FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$629Average$886FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$666Average$940FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$707Average$823FlexibilityNo cancel feeOn-time77%
Alaska AirlinesCheapest$801Average$1,041FlexibilityNo cancel feeOn-time75%

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