Cheap flights from Seattle to Basel Mulhouse Freiburg

Compare Seattle to Basel Mulhouse Freiburg flight deals

Find the cheapest month or even day of the year to fly to Basel Mulhouse Freiburg

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Flight deals from Seattle to Basel Mulhouse Freiburg Airport

Looking for a cheap last-minute deal or the best return flight from Seattle to Basel Mulhouse Freiburg? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Basel Mulhouse Freiburg

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Basel Mulhouse Freiburg flights are currently cheapest in April.

Seattle to Basel Mulhouse Freiburg: Alternative routes

Compare routes from Seattle to Basel below. You may find an airport to fly into that's cheaper, faster, or easier than Basel Mulhouse Freiburg.

Seattle to Basel: Flight information

The things to know before you go.
Cheapest flight found$461
Cheapest month to flyApril

Finding cheap flights from Seattle to Basel Mulhouse Freiburg: Frequently asked questions

The best price we found for a return flight from Seattle to Basel Mulhouse Freiburg is $1,237. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Basel Mulhouse Freiburg. But we found flights with one stop from $1,237.
As of March 2026, there are no flights flying from Seattle to Basel Mulhouse Freiburg.
The cheapest month to fly from Seattle to Basel Mulhouse Freiburg is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Basel Mulhouse Freiburg Airport on Monday, 17 August 2026.
No airlines currently offer direct flights between Seattle and Basel Mulhouse Freiburg Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Basel Mulhouse Freiburg but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Basel is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Basel Mulhouse Freiburg is Condor .

Travelling from Seattle to EuroAirport Swiss (BSL): What you need to know

  • The timezone in Basel is UTC+1, which is nine hours ahead of Seattle. EuroAirport Swiss is located in Basel.

  • Arrive at the airport on time so you don't miss your flight from Seattle to BSL. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • Popular months like July or holiday periods such as spring break and Thanksgiving will mean longer lines at check-in and security. Be on the safe side and head to the terminal even earlier. Arriving two hours before a domestic flight and up four hours ahead of international flights is wise.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Think about adding a stopover to find cheap flights from Seattle to BSL. Simply uncheck 'Direct flights only' when browsing departures from Seattle-Tacoma International Airport (SEA). Break the trip up (and maybe score a better deal) by stopping at one of these popular airports:

    • London Heathrow Airport (LHR)

    • Amsterdam Schiphol Airport (AMS)

    • Paris Charles de Gaulle Airport (CDG)

  • Travelling from central Seattle to SEA takes around 35 minutes on public transport. If you ride-share, drive or take a taxi, you'll cover the 23 kilometres in 25 minutes or so, depending on traffic.

  • Want a relaxed start to your holiday? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to EuroAirport Swiss or prefer not to feel hurried, these hotels have you covered:

  • 80% of flights leaving Seattle-Tacoma International Airport reach their destination as planned. Given its reliable on-time performance, you're unlikely to be delayed when flying out of SEA.

Seattle Paine Field International Airport (PAE)

  • PAE is around 40 kilometres from central Seattle. It'll take 40 minutes or so to get to the airport if you're driving from the city centre. Public transport takes roughly 1 hour 30 minutes.

  • Get your holiday started early with an additional night away from home. Before your Seattle to BSL flight, stay in one of these hotels close to Seattle Paine Field International Airport:

  • The majority of flights that depart Seattle Paine Field International Airport touch down at their destination on schedule. It maintains a high on-time performance rate of 80%.

About EuroAirport Swiss (BSL)

Getting from EuroAirport Swiss (BSL) to central Basel

  • EuroAirport Swiss to the centre of Basel is around 6 kilometres. If you're renting a car or taking a taxi, do some research to make your trip as easy as possible. Journey times vary depending on traffic and the time of day.

  • Travelling by public transport will take you roughly 30 minutes.

How to find the cheapest flights from Seattle to EuroAirport Swiss (BSL)

  • $461 is the lowest price for a one-way ticket from Seattle to EuroAirport Swiss. Return flights start at $1,237. These prices may change depending on demand and availability.

  • Don't wait until the last minute. You're more likely to find cheap flights from Seattle to BSL if you book early. Airlines often offer some amazing early bird discounts.

  • Affordable Seattle to EuroAirport Swiss tickets are easier to find when you have flexibility in your schedule. Use the 'Whole month' search function to compare fares throughout the month and then pick the cheapest day.

  • Finding a cheap plane ticket from Seattle to BSL is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when the price has dropped.

  • Filters make it easier to save some cash on your flight from Seattle to EuroAirport Swiss. Choose the airlines, flight times and stops that match your plans. Then sort the results by 'Cheapest' to find the best price quickly.

The best time to fly from Seattle to EuroAirport Swiss (BSL)

  • May is the quietest month for flights from Seattle to EuroAirport Swiss (BSL), while September is the most popular. Work out the best time to go to Basel based on whether you want a bustling atmosphere or a more laid-back vibe.

  • Book a Seattle to BSL plane ticket departing in August if you want to visit the city during its warmest month. Expect temperatures in Basel to range from 11ºC (52ºF) to 29ºC (84ºF).

  • January sees temperatures of between -5ºC (23ºF) and 8ºC (46ºF). Search for cheap tickets from Seattle to EuroAirport Swiss around that time if you want to travel when it's cooler.

More about Basel

  • After booking your flight from Seattle to EuroAirport Swiss, find a hotel that keeps you close to what you want to see. Make one of these accommodation options your base for exploring Basel:

  • You'll find loads of awesome things to do in Basel when you're ready to go sightseeing. Kick things off at Art Basel followed by Basel Minster and Muensterplatz.

Explore more of Switzerland

  • Basel has plenty to offer, but there are so many other parts of Switzerland you should also see. Around 137 kilometres southwest of Basel, a trip to Lausanne will keep you on the go. Start with leading sights like Olympic Park, The Olympic Museum and Cathedrale de Lausanne.

  • If you're eager to discover another corner of Switzerland, head for Lugano, roughly 209 kilometres southeast of Basel. Lungolago di Lugano, Aussichtspunkt San Salvatore and LAC Lugano Arte e Cultura are among the biggest draws.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.