Cheap flights from Seattle (SEA) to Basel EuroAirport Swiss (BSL) from $354

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — BSL
jun. 25 — jul. 21

Cheap flight deals from Seattle to Basel

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Basel (BSL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 20, 2024.

Popular in

May

Cheapest in

February

Average price

$1,165

Round-trip from

$560
High demand for flights, 30% potential price rise
Best time to find cheap flights, 32% potential price drop
Average for round-trip flights in June 2024
From Seattle/Tacoma Intl to Basel EuroAirport Swiss

What is the cheapest day to fly round-trip from Seattle to Basel EuroAirport Swiss?

Thursday flights are generally found to be more expensive for flights from Seattle to Basel EuroAirport Swiss. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Basel EuroAirport Swiss.

What is the cheapest month to fly from Seattle to Basel EuroAirport Swiss?

Flights from Seattle to Basel EuroAirport Swiss lean towards being more expensive in May. Prices are generally better when you fly from Seattle to Basel EuroAirport Swiss in November, with the cheapest ticket starting at $494.

What is the cheapest time of day to fly from SEA to BSL?

A simple way to save on the total cost of your ticket is to fly from Seattle to Basel EuroAirport Swiss in the morning. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the afternoon.

Cheap Seattle to Basel flights in June & July 2024

Find cheap flight options from Seattle to Basel specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,256,981 searches. Prices were last updated on junio 20, 2024.
Check out some of the best flight deals from Seattle to Basel in 2024. Check back regularly for other flight deals.
mié. 7/176:15 pmSEA - BSL
1 stop14h 50mDelta
mié. 7/2410:15 amBSL - SEA
2 stops20h 10mDelta
Deal found 6/19$871
mié. 7/177:10 amSEA - BSL
2 stops17h 35mDelta
mié. 7/2410:15 amBSL - SEA
2 stops20h 10mDelta
Deal found 6/19$888
mié. 7/176:15 pmSEA - BSL
1 stop14h 50mAir France
mié. 7/2410:15 amBSL - SEA
1 stop33h 00mAir France
Deal found 6/19$1,053
jue. 7/181:35 pmSEA - BSL
1 stop19h 30mDelta
jue. 7/256:20 amBSL - SEA
1 stop12h 55mDelta
Deal found 6/19$1,067
mar. 7/1612:30 amSEA - BSL
2 stops34h 05mUnited Airlines
mié. 7/241:30 pmBSL - SEA
2 stops20h 12mUnited Airlines
Deal found 6/19$1,076
jue. 7/189:52 amSEA - BSL
2 stops18h 58mDelta
jue. 7/256:20 amBSL - SEA
1 stop12h 55mDelta
Deal found 6/19$1,084
jue. 7/181:10 pmSEA - BSL
2 stops15h 30mMultiple Airlines
jue. 7/251:40 pmBSL - SEA
2 stops17h 40mMultiple Airlines
Deal found 6/19$1,086
mar. 7/1612:30 amSEA - BSL
2 stops34h 05mUnited Airlines
mié. 7/246:40 amBSL - SEA
1 stop14h 35mUnited Airlines
Deal found 6/19$1,100
mié. 7/176:45 amSEA - BSL
3 stops27h 50mUnited Airlines
mié. 7/241:30 pmBSL - SEA
2 stops20h 12mUnited Airlines
Deal found 6/19$1,155

Seattle to Basel 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Basel in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,256,981 searches. Data last updated junio 20, 2024.
Check out some of the best flight deals from Seattle to Basel in 2024. Check back regularly for other flight deals.
mié. 11/66:45 pmSEA - BSL
1 stop18h 15mBritish Airways
mié. 11/1311:10 amBSL - SEA
1 stop14h 35mBritish Airways
Deal found 6/19$454
mié. 11/62:03 pmSEA - BSL
2 stops19h 17mBritish Airways
mié. 11/1311:10 amBSL - SEA
1 stop14h 35mBritish Airways
Deal found 6/19$459
mié. 11/61:39 pmSEA - BSL
2 stops19h 41mBritish Airways
mié. 11/1311:10 amBSL - SEA
2 stops19h 33mBritish Airways
Deal found 6/19$469
mié. 11/205:50 amSEA - BSL
2 stops22h 20mAir Canada
jue. 11/287:00 amBSL - SEA
2 stops20h 26mAir Canada
Deal found 6/18$493
vie. 11/86:45 pmSEA - BSL
1 stop14h 00mBritish Airways
vie. 11/156:50 amBSL - SEA
1 stop13h 35mBritish Airways
Deal found 6/20$504
vie. 11/89:55 amSEA - BSL
2 stops21h 25mMultiple Airlines
vie. 11/1511:05 amBSL - SEA
2 stops19h 03mMultiple Airlines
Deal found 6/20$549
vie. 11/82:07 pmSEA - BSL
2 stops17h 13mLufthansa
vie. 11/157:00 amBSL - SEA
1 stop14h 10mLufthansa
Deal found 6/20$558
mié. 11/66:39 amSEA - BSL
3 stops27h 51mUnited Airlines
mié. 11/1311:05 amBSL - SEA
2 stops20h 17mUnited Airlines
Deal found 6/20$586
mar. 9/31:26 pmSEA - BSL
2 stops24h 29mAmerican Airlines
vie. 9/206:40 amBSL - SEA
1 stop13h 55mAmerican Airlines
Deal found 6/19$630

Seattle to Basel flights leaving soon

Find last-minute flight options from Seattle to Basel for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,256,981 searches. Data last updated junio 20, 2024.
Have a look at some of the last-minute flights available departing from Seattle to Basel. Tip: verify your flight details before completing your reservation.
lun. 7/11:39 pmSEA - BSL
2 stops19h 01mMultiple Airlines
sáb. 7/611:05 amBSL - SEA
2 stops20h 47mMultiple Airlines
Deal found 6/19$1,409
lun. 7/111:00 amSEA - BSL
2 stops21h 40mMultiple Airlines
sáb. 7/68:30 amBSL - SEA
1 stop14h 40mMultiple Airlines
Deal found 6/19$1,464
lun. 7/15:05 pmSEA - BSL
1 stop15h 35mMultiple Airlines
sáb. 7/68:30 amBSL - SEA
1 stop14h 40mMultiple Airlines
Deal found 6/19$3,378

One-way flights to Basel from Seattle

Search for one-way flight options from Seattle to Basel. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,256,981 searches. Data last updated junio 20, 2024.
Take a look at some of the one-way flights we've detected from Seattle to Basel. For those needing a return trip from Seattle, there is a search form available above.
dom. 8/411:00 pmSEA - BSL
2 stops47h 40mMultiple Airlines
Deal found 6/19$354
sáb. 7/66:15 pmSEA - BSL
3 stops53h 30mMultiple Airlines
Deal found 6/19$393
sáb. 7/66:15 pmSEA - BSL
3 stops53h 30mMultiple Airlines
Deal found 6/19$395
sáb. 7/66:15 pmSEA - BSL
2 stops55h 55mMultiple Airlines
Deal found 6/19$405
sáb. 7/66:15 pmSEA - BSL
2 stops55h 55mMultiple Airlines
Deal found 6/19$407
sáb. 7/271:50 pmSEA - BSL
3 stops57h 25mMultiple Airlines
Deal found 6/19$408
mar. 7/911:30 amSEA - BSL
2 stops40h 30mMultiple Airlines
Deal found 6/19$422
dom. 8/411:00 pmSEA - BSL
3 stops33h 00mMultiple Airlines
Deal found 6/19$430
sáb. 7/271:50 pmSEA - BSL
2 stops39h 30mMultiple Airlines
Deal found 6/19$447

Find flights from Seattle to Basel within your budget

Customize your flight search to find flights from Seattle to Basel 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 3,256,981 searches. Data last updated junio 20, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$454 - $748

Route

Depart

Return

Price

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

mié. 11/6

1 stop18h 15m

Basel EuroAirport Swiss

mié. 11/13

1 stop14h 35m

$454

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

mié. 11/6

2 stops19h 17m

Basel EuroAirport Swiss

mié. 11/13

1 stop14h 35m

$459

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

mié. 11/20

2 stops22h 20m

Basel EuroAirport Swiss

jue. 11/28

2 stops20h 26m

$493

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

vie. 11/8

2 stops21h 25m

Basel EuroAirport Swiss

vie. 11/15

2 stops19h 03m

$549

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

vie. 11/8

2 stops17h 13m

Basel EuroAirport Swiss

vie. 11/15

1 stop14h 10m

$558

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

mié. 11/6

3 stops27h 51m

Basel EuroAirport Swiss

mié. 11/13

2 stops20h 17m

$586

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

mar. 9/3

2 stops24h 29m

Basel EuroAirport Swiss

vie. 9/20

1 stop13h 55m

$630

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

lun. 8/26

1 stop19h 25m

Basel EuroAirport Swiss

mar. 9/3

1 stop15h 55m

$737

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

dom. 8/4

1 stop19h 25m

Basel EuroAirport Swiss

jue. 8/22

2 stops20h 28m

$748

Flights are sorted by cheapest first

Deals found on 6/19

What is the cheapest day to fly from Seattle to Basel EuroAirport Swiss?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Basel. Price data was last updated on June 16, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Basel EuroAirport Swiss flight should consider departing on Sunday afternoons when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Seattle to Basel

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

Temperature and rainfall in Basel by month

Plan your trip to Basel by taking into account the average temperature and rainfall totals by month.

EAP

Temperature

33.8 - 66.2 °F

If weather is an important factor for your trip to Basel EuroAirport Swiss, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Basel

Get insights into the airlines that provide service to Basel. 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 Basel. Reviews last updated junio 20, 2024.
Read through reviews of airlines operating flights from Seattle to Basel, such as British Airways, Air Canada and American Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

8.0
Very good
10,000 reviews
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.5
Good
1,666 reviews
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.4
Good
3,730 reviews
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.4
Good
10,000 reviews
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.4
Good
2,778 reviews
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Basel. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Seattle to Basel EuroAirport Swiss for under $500 on Cheapflights?

    Yes, there are multiple flights from Seattle to Basel EuroAirport Swiss for under $500. The cheapest flight booked recently is on British Airways for just $454, but on average you can expect to pay $597.

  • Are there last-minute flights available from Seattle to Basel EuroAirport Swiss for under $1,500?

    There are currently 3+ open flights from Seattle to Basel EuroAirport Swiss within the next 7 days for less than $1,500.

  • What are the cheapest airlines flying from Seattle to Basel EuroAirport Swiss round-trip?

    British Airways, at $454, was found to be the cheapest airline from Seattle to Basel EuroAirport Swiss.Alternate airlines to your destination round-trip include Air Canada and Lufthansa. You may be able to fly from Seattle to Basel EuroAirport Swiss for 48% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Seattle to Basel EuroAirport Swiss one-way?

    One-way options have recently been found by users for as low as $575 on Delta. Other airlines that offer cheap prices include British Airways from $647 and United Airlines from $656 one-way.

  • What does SEA to BSL mean?

    SEA stands for Seattle/Tacoma Intl Airport, while BSL stands for Basel EuroAirport Swiss. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Seattle to Basel that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Basel flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Basel with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Basel flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Basel by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Basel that allow pets onboard?

    Many airlines flying from Seattle to Basel offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Basel?

    Yes, you can often find last-minute deals on Seattle to Basel flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Basel EuroAirport Swiss flight deals updated?

    The Seattle to Basel EuroAirport Swiss flight deals you see on this page were last updated on 6/20.

See more FAQs

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Alternative routes for Seattle to Basel
See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Seattle to Basel

Discover the top 2 airlines that operate flights from Seattle to Basel. 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 3,256,981 searches. Data last updated junio 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$557Average$1,120FlexibilityNo cancel feeOn-time70%
DeltaCheapest$719Average$1,271FlexibilityNo cancel feeOn-timeN/A

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