The cheapest times to fly from ASE to STN are

  • February 26th to March 18th
  • April 2nd to June 10th
  • June 25th to July 22nd
  • September 3rd to October 21st

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 ASE to STN is early to mid October. Prices can be as high as $12403 for Saturday flights during early November, or as low as $1069 for Thursday flights around early to mid October.


When to Fly to London

Flying from Aspen, CO (ASE) to London (STN) will usually cost between $1248 to $5138 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid October with an average ticket price of $1422. Due to high demand the most expensive time to fly is early November, with an average price of $4962. Planning your trip to low-cost times can easily save you $3539 on economy flights and even more on first-class flights. Generally, any price below $1855 can be considered a good price for a round-trip ASE to STN flight.

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

ASE to STN Flight Prices

Compared to other flights, the ASE to STN flight is more expensive than the average and costs more than the average flight leaving from Aspen. The average price per mile (for a direct flight) is $0.24, which is below average.


Flight Prices by Day of the Week

Thursday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to London, and Fridays are the most expensive days to return to Aspen. Selecting flights on the least expensive days could save you up to $632 (22%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Thursday and returning a week later will cost an average of $2226. Return trip prices are from the STN to ASE 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 ASE to STN can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 34 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 ASE to STN while comparing.

Destination alternative #1: London Heathrow Airport (LHR) in London

  • 41 miles (66 km) away from STN
  • Usually 43.41% less expensive than STN
  • 1-layover flights available

See ASE to LHR flights

Destination alternative #2: Manchester Airport (MAN) in Manchester

  • 146 miles (235 km) away from STN
  • Usually 35.83% less expensive than STN
  • 1-layover flights available

See ASE to MAN flights


Flight Hacking ASE to STN

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 ASE to STN — but Champion Traveler does!

Hack #1: Amsterdam (ASE > AMS > STN)

  • Price for both tickets: $991
  • Average savings: $864 (46.56%)

See ASE to AMS flights

Hack #2: San Jose, CA (ASE > SJC > STN)

  • Price for both tickets: $1091
  • Average savings: $764 (41.2%)

See ASE to SJC flights

Hack #3: Frankfurt (ASE > FRA > STN)

  • Price for both tickets: $1095
  • Average savings: $760 (40.98%)

See ASE to FRA flights


Flight Questions Answered

Still have questions about flying from ASE to STN? We’ve got answers.

Which airlines fly this route?

You can find 10 major airlines flying this route most often: Air Canada, American, British Airways, Eurowings, Finnair, KLM, Lufthansa, SAS, SWISS, United, and potentially more during busy seasons.

How far away is it from London Stansted Airport to Aspen Pitkin County Sardy Field Airport?

The distance between the two airports is roughly 4773 miles or 7681 kilometers.

How long does it take to fly from ASE to STN?

The real-world flight time for a nonstop ASE to STN flight is about 9 hour 34 minutes.

How many flights go between Aspen, CO and London?

It depends on the day of the week and the date, but a typical day might have around 10 available flights from ASE to STN.


Airport Location Info


Departing Airport

Origination code ASE
Origination airport name Aspen Pitkin County Sardy Field Airport
City Aspen, CO
Country the United States
Latitude 39.2
Longitude -106.9

Return Airport

Destination code STN
Destination airport name London Stansted Airport
City London
Country the United Kingdom
Latitude 51.9
Longitude 0.2


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.