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Interlaken

$281+ Cheap flights from Seattle (SEA) to Interlaken, Switzerland

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ZRH
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Interlaken are usually found in October or November, booked 71 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Seattle to Interlaken

Keep the following information in mind while searching for Seattle to Interlaken flight deals. Data was last updated September 15, 2025.

Round-trip from

$454
(Delta)

One-way from

$281
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$646
From Seattle/Tacoma Intl to Interlaken
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One-way flight from Seattle/Tacoma Intl to Interlaken
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Highest demand for flights based on searches. 15% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Interlaken

Cheapest flights from Seattle to Interlaken
Explore the most affordable flight options available from Seattle to Interlaken. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:35 amSEA - ZRH
1 stop13h 55mDelta
Wed 4/1510:10 amZRH - SEA
1 stop22h 56mDelta
Deal found 9/15$454
This Scandinavian Airlines deal was found by Cheapflights users on 9/13. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/812:45 pmSEA - ZRH
2 stops22h 00mScandinavian Airlines
Thu 10/232:00 pmZRH - SEA
2 stops33h 00mScandinavian Airlines
Deal found 9/13$458
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/229:59 pmSEA - ZRH
1 stop27h 31mDelta
Thu 12/41:30 pmZRH - SEA
1 stop17h 51mDelta
Deal found 9/14$459
This Ovago deal was found by Cheapflights users on 9/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:00 amSEA - ZRH
1 stop18h 40mSWISS
Wed 12/171:15 pmZRH - SEA
1 stop16h 45mSWISS
Deal found 9/14$465
This KAYAK deal was found by Cheapflights users on 9/14. 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.
Tue 10/71:00 pmSEA - ZRH
1 stop17h 40mSWISS
Wed 10/151:25 pmZRH - SEA
2 stops42h 50mSWISS
Deal found 9/14$466
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amSEA - ZRH
1 stop18h 40mUnited Airlines
Fri 1/99:25 amZRH - SEA
1 stop12h 55mUnited Airlines
Deal found 9/15$469
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/91:25 pmSEA - ZRH
1 stop13h 10mBritish Airways
Mon 12/159:10 pmZRH - SEA
1 stop23h 20mBritish Airways
Deal found 9/14$470
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:15 amSEA - ZRH
1 stop17h 10mAir Canada
Fri 1/99:25 amZRH - SEA
2 stops21h 41mAir Canada
Deal found 9/14$471
This British Airways deal was found by Cheapflights users on 9/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:50 pmSEA - ZRH
1 stop31h 55mBritish Airways
Fri 4/177:15 amZRH - SEA
1 stop13h 20mBritish Airways
Deal found 9/14$472

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Interlaken 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 September 15, 2025.
Use the filters below to find and compare flights from Seattle to Interlaken that are best for you.

Fly from

Seattle

Fly to

Interlaken

Route

Depart

Return

Price

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Tue 3/3

7:00 am-7:55 am

1 stop15h 55m

Zurich

Thu 3/26

9:40 am-6:59 pm

1 stop17h 19m

$454

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Wed 12/10

11:35 am-10:30 am

1 stop13h 55m

Zurich

Wed 4/15

10:10 am-12:06 am

1 stop22h 56m

$454

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Sun 3/8

11:50 pm-7:55 am

1 stop24h 05m

Zurich

Thu 3/26

9:40 am-6:59 pm

1 stop17h 19m

$454

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Wed 3/4

5:07 am-7:40 am

2 stops17h 33m

Zurich

Tue 3/31

11:55 am-8:10 pm

1 stop17h 15m

$454

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Sun 3/8

6:35 am-3:30 pm

1 stop24h 55m

Zurich

Wed 4/1

1:10 pm-12:51 am

1 stop20h 41m

$454

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Sat 3/7

11:50 pm-7:55 am

1 stop23h 05m

Zurich

Wed 4/1

1:05 pm-10:29 pm

1 stop18h 24m

$454

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Wed 3/4

5:07 am-7:40 am

2 stops17h 33m

Zurich

Wed 4/1

11:55 am-8:10 pm

1 stop17h 15m

$454

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Wed 10/8

1:40 pm-7:45 pm

2 stops21h 05m

Zurich

Thu 10/23

8:25 pm-2:00 pm

1 stop26h 35m

$464

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Sat 3/14

11:50 pm-10:40 am

1 stop26h 50m

Zurich

Wed 3/25

10:45 am-8:10 am

2 stops29h 25m

$465

SeattleZurich

SEA - ZRH

SEAZRH

Seattle/Tacoma Intl

Mon 3/9

1:55 pm-10:40 am

2 stops36h 45m

Zurich

Thu 3/26

9:40 am-6:59 pm

1 stop17h 19m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 19 results
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Best time to book a flight from Seattle to Interlaken

Have a flexible travel schedule? Discover the best time to fly to Interlaken 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 Interlaken

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Interlaken. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Interlaken, you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from Seattle to Interlaken (average of $637). Flying from Seattle to Interlaken in June is currently the most expensive (average of $1,147). 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 IN9?

Find hourly flight availability from Seattle to Interlaken. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Seattle to Interlaken, 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 Interlaken?

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

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

Reviews of airlines servicing Interlaken

Get insights into the airlines that provide service to Interlaken. 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 Interlaken. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Delta, SWISS, and Icelandair from Seattle to Interlaken to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

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
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

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
1,730 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

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!
Icelandair
7.0
Good
544 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

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!
Lufthansa
6.8
Okay
7,407 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

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!
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

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 Interlaken. 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 Interlaken?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Interlaken from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Interlaken should be relatively easy as there are 0 daily outbound flights to Interlaken from 14 different airlines.

  • How popular is this Seattle to Interlaken flight route?

    Flights from Seattle/Tacoma Intl to Interlaken have been viewed 1 times in the past calendar month.

  • How long is the flight from Seattle to Interlaken?

    There are many flights that can get you from Seattle to Interlaken in 13h 55m. Fly via United Airlines or Delta to get the fastest option. Airlines will cover a distance of 5241 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest flights from Seattle to Interlaken?

    On average you can expect to pay $677 for a flight from Seattle to Interlaken. The cheapest flight overall is $374 while the most popular route, (Seattle/Tacoma Intl - Zurich) is currently priced at $381.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Interlaken 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 Interlaken?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Interlaken (average of $637). Flying from Seattle to Interlaken in June is currently the most expensive (average of $1,147). 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 Interlaken

Discover the top 10 airlines that operate flights from Seattle to Interlaken. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$384Average$482FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$400Average$576FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$435Average$824FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$443Average$687FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$452Average$767FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$485Average$681FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$486Average$636FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$491Average$736FlexibilityNo cancel feeOn-time76%
DeltaCheapest$506Average$755FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$526Average$698FlexibilityNo cancel feeOn-time67%

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