The cheapest times to fly from PEK to SDY are

  • January 29th to February 18th
  • March 5th to April 1st
  • May 14th to July 8th
  • early to mid September

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 PEK to SDY is late May to early June. Prices can be as high as $6312 for Friday flights during early to mid May, or as low as $2948 for Tuesday flights around late May to early June.


When to Fly to Sidney

Flying from Beijing (PEK) to Sidney, MT (SDY) will usually cost between $3278 to $4067 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late May to early June with an average ticket price of $3338. Due to high demand the most expensive time to fly is early to mid May, with an average price of $4456. Planning your trip to low-cost times can easily save you $1118 on economy flights and even more on first-class flights. Generally, any price below $3517 can be considered a good price for a round-trip PEK to SDY flight.

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

PEK to SDY Flight Prices

Compared to other flights, the PEK to SDY flight is more expensive than the average and costs more than the average flight leaving from Beijing. The average price per mile (for a direct flight) is $0.37, which is a bit above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to SDY, and Thursday the cheapest day to fly back into PEK. Fridays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $372 (6%) 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 $3424. Return trip prices are from the SDY to PEK 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 PEK to SDY can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 33 minutes may not be realistic.


Flight Hacking PEK to SDY

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 PEK to SDY — but Champion Traveler does!

Hack #1: Los Angeles, CA (PEK > LAX > SDY)

  • Price for both tickets: $1026
  • Average savings: $2491 (70.83%)

See PEK to SFO flights

Hack #2: San Francisco, CA (PEK > SFO > SDY)

  • Price for both tickets: $1124
  • Average savings: $2394 (68.06%)

See PEK to LAX flights

Hack #3: San Jose, CA (PEK > SJC > SDY)

  • Price for both tickets: $1179
  • Average savings: $2338 (66.48%)

See PEK to SJC flights


Flight Questions Answered

Still have questions about flying from PEK to SDY? We’ve got answers.

Which airlines fly this route?

You can find 8 major airlines flying this route most often: Alaska, American, ANA, Cape Air, China Southern, Delta, JAL, United, and potentially more during busy seasons.

How far away is it from Sidney Richland Regional Airport to Capital International Airport?

The distance between the two airports is roughly 5875 miles or 9455 kilometers.

How long does it take to fly from PEK to SDY?

The real-world flight time for a nonstop PEK to SDY flight is about 11 hour 33 minutes.

How many flights go between Beijing and Sidney, MT?

It depends on the day of the week and the date, but a typical day might have around 18 available flights from PEK to SDY.


Airport Location Info


Departing Airport

Origination code PEK
Origination airport name Capital International Airport
City Beijing
Country China
Latitude 40.1
Longitude 116.6

Return Airport

Destination code SDY
Destination airport name Sidney Richland Regional Airport
City Sidney, MT
Country the United States
Latitude 47.7
Longitude -104.2


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.