The cheapest times to fly from BWI to TOS are

  • April 2nd to July 15th (except the week of May 21st)
  • November 19th to February 11th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from BWI to TOS is early December. Prices can be as high as $15200 for Wednesday flights during late August to early September, or as low as $751 for Tuesday flights around early December.


When to Fly to Tromsø

Flying from Baltimore, MD (BWI) to Tromso (TOS) will usually cost between $789 to $15200 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early December with an average ticket price of $1065. Due to high demand the most expensive time to fly is late August to early September, with an average price of $10429. Planning your trip to low-cost times can easily save you $9364 on economy flights and even more on first-class flights. Generally, any price below $1696 can be considered a good price for a round-trip BWI to TOS flight.

See below for a graph of average weekly prices for the BWI to TOS route. All prices are for round-trip tickets in USD.

BWI to TOS Flight Prices

Compared to other flights, the BWI to TOS flight is more expensive than the average and costs slightly more than the average flight leaving from Baltimore. The average price per mile (for a direct flight) is $0.27, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Wednesdays are the most expensive days to fly to Tromsø, and Fridays are the most expensive days to return to Baltimore. Selecting flights on the least expensive days could save you up to $2282 (43%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1330. Return trip prices are from the TOS to BWI flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from BWI to TOS can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 7 hour 53 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from BWI to TOS while comparing.

Destination alternative #1: Kiruna Airport (KRN) in Kiruna

  • 133 miles (214 km) away from TOS
  • Usually 12.53% less expensive than TOS
  • 2-layover flights available

See BWI to KRN flights


Flight Hacking BWI to TOS

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from BWI to TOS — but Champion Traveler does!

Hack #1: London (BWI > LGW > TOS)

  • Price for both tickets: $919
  • Average savings: $777 (45.8%)

See BWI to LGW flights

Hack #2: Oslo (BWI > OSL > TOS)

  • Price for both tickets: $938
  • Average savings: $758 (44.68%)

See BWI to OSL flights

Hack #3: New York, NY (BWI > JFK > TOS)

  • Price for both tickets: $940
  • Average savings: $756 (44.59%)

See BWI to JFK flights


Flight Questions Answered

Still have questions about flying from BWI to TOS? We’ve got answers.

Which airlines fly this route?

You can find 17 major airlines flying this route most often: Air Canada, Air France, American, Austrian, British Airways, Delta, Finnair, Iberia, Icelandair, JetBlue, KLM, Lufthansa, SAS, SWISS, Turkish Airlines, United, Wideroe, and potentially more during busy seasons.

How far away is it from Langnes Airport to Baltimore/Washington International Thurgood Marshall Airport?

The distance between the two airports is roughly 3835 miles or 6172 kilometers.

How long does it take to fly from BWI to TOS?

The real-world flight time for a nonstop BWI to TOS flight is about 7 hour 53 minutes.

How many flights go between Baltimore, MD and Tromso?

It depends on the day of the week and the date, but a typical day might have around 68 available flights from BWI to TOS.


Airport Location Info


Departing Airport

Origination code BWI
Origination airport name Baltimore/Washington International Thurgood Marshall Airport
City Baltimore, MD
Country the United States
Latitude 39.2
Longitude -76.7

Return Airport

Destination code TOS
Destination airport name Langnes Airport
City Tromso
Country Norway
Latitude 69.7
Longitude 18.9


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.