The cheapest times to fly from BIL to CMB are

  • January 8th to May 6th (except the weeks of February 5th, March 5th, and March 12th)
  • August 27th to October 21st
  • November 5th to November 25th

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 BIL to CMB is mid to late September. Prices can be as high as $6796 for Friday flights during late December, or as low as $1172 for Sunday flights around mid to late September.


When to Fly to Colombo

Flying from Billings, MT (BIL) to Colombo (CMB) will usually cost between $1284 to $5143 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $2219. Due to high demand the most expensive time to fly is late December, with an average price of $4149. Planning your trip to low-cost times can easily save you $1930 on economy flights and even more on first-class flights. Generally, any price below $2544 can be considered a good price for a round-trip BIL to CMB flight.

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

BIL to CMB Flight Prices

Compared to other flights, the BIL to CMB flight is more expensive than the average and costs more than the average flight leaving from Billings. The average price per mile (for a direct flight) is $0.18, which is below average.


Flight Prices by Day of the Week

Sunday is usually the cheapest day to fly to CMB, and Tuesday the cheapest day to fly back into BIL. Fridays are the most expensive days to fly to Colombo, and Saturdays are the most expensive days to return to Billings. Selecting flights on the least expensive days could save you up to $1865 (41%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Sunday and returning a week later will cost an average of $1556. Return trip prices are from the CMB to BIL 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 BIL to CMB can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 16 hour 42 minutes may not be realistic.


Flight Hacking BIL to CMB

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 BIL to CMB — but Champion Traveler does!

Hack #1: Los Angeles, CA (BIL > LAX > CMB)

  • Price for both tickets: $1275
  • Average savings: $1270 (49.9%)

See BIL to LAX flights

Hack #2: Singapore (BIL > SIN > CMB)

  • Price for both tickets: $1294
  • Average savings: $1251 (49.15%)

See BIL to SIN flights

Hack #3: San Francisco, CA (BIL > SFO > CMB)

  • Price for both tickets: $1326
  • Average savings: $1218 (47.88%)

See BIL to SFO flights


Flight Questions Answered

Still have questions about flying from BIL to CMB? We’ve got answers.

Which airlines fly this route?

You can find 21 major airlines flying this route most often: Air Canada, Air France, Alaska, American, ANA, Asiana, Cathay Dragon, Cathay Pacific, China Southern, Delta, Emirates, Etihad, EVA Air, JAL, KLM, Korean Air, Lufthansa, Singapore Airlines, SriLankan, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Bandaranaike International Colombo Airport to Billings Logan International Airport?

The distance between the two airports is roughly 8737 miles or 14061 kilometers.

How long does it take to fly from BIL to CMB?

The real-world flight time for a nonstop BIL to CMB flight is about 16 hour 42 minutes.

How many flights go between Billings, MT and Colombo?

It depends on the day of the week and the date, but a typical day might have around 12 available flights from BIL to CMB.


Airport Location Info


Departing Airport

Origination code BIL
Origination airport name Billings Logan International Airport
City Billings, MT
Country the United States
Latitude 45.8
Longitude -108.5

Return Airport

Destination code CMB
Destination airport name Bandaranaike International Colombo Airport
City Colombo
Country Sri Lanka
Latitude 7.2
Longitude 79.9


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.