The cheapest times to fly from ORD to EAS are

  • January 8th to May 13th
  • September 17th to September 30th
  • October 29th to December 9th (except the week of November 19th)

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 ORD to EAS is mid November. Prices can be as high as $1820 for Saturday flights during late June, or as low as $536 for Wednesday flights around mid November.


When to Fly to Donostia-San Sebastian

Flying from Chicago, IL (ORD) to San Sebastian (EAS) will usually cost between $541 to $1259 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid November with an average ticket price of $567. Due to high demand the most expensive time to fly is late June, with an average price of $1242. Planning your trip to low-cost times can easily save you $675 on economy flights and even more on first-class flights. Generally, any price below $679 can be considered a good price for a round-trip ORD to EAS flight.

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

ORD to EAS Flight Prices

Compared to other flights, the ORD to EAS flight is cheaper than the average and costs less than the average flight leaving from Chicago. The average price per mile (for a direct flight) is $0.1, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to EAS, and Monday the cheapest day to fly back into ORD. Saturdays 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 $149 (16%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $735. Return trip prices are from the EAS to ORD 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 ORD to EAS can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 8 hour 29 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 ORD to EAS while comparing.

Destination alternative #1: Bilbao Airport (BIO) in Bilbao

  • 56 miles (90 km) away from EAS
  • Usually 18.11% less expensive than EAS
  • 1-layover flights available

See ORD to BIO flights

Destination alternative #2: Santander Airport (SDR) in Santander

  • 102 miles (164 km) away from EAS
  • Usually 9.20% less expensive than EAS
  • 1-layover flights available

See ORD to SDR flights


Flight Hacking ORD to EAS

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 ORD to EAS — but Champion Traveler does!

Hack #1: Barcelona (ORD > BCN > EAS)

  • Price for both tickets: $502
  • Average savings: $177 (26.07%)

See ORD to BCN flights

Hack #2: Madrid (ORD > MAD > EAS)

  • Price for both tickets: $625
  • Average savings: $54 (7.95%)

See ORD to MAD flights


Flight Questions Answered

Still have questions about flying from ORD to EAS? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: American, British Airways, Finnair, Iberia, JetBlue, Tap Air Portugal, United, and potentially more during busy seasons.

How far away is it from San Sebastian Airport to Chicago O’Hare International Airport?

The distance between the two airports is roughly 4164 miles or 6701 kilometers.

How long does it take to fly from ORD to EAS?

The real-world flight time for a nonstop ORD to EAS flight is about 8 hour 29 minutes.

How many flights go between Chicago, IL and San Sebastian?

It depends on the day of the week and the date, but a typical day might have around 6 available flights from ORD to EAS.


Airport Location Info


Departing Airport

Origination code ORD
Origination airport name Chicago O’Hare International Airport
City Chicago, IL
Country the United States
Latitude 42
Longitude -87.9

Return Airport

Destination code EAS
Destination airport name San Sebastian Airport
City San Sebastian
Country Spain
Latitude 43.4
Longitude -1.8


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.