The cheapest times to fly from ORD to TLL are

  • January 1st to April 1st
  • September 10th to December 9th

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 TLL is late September. Prices can be as high as $1120 for Saturday flights during late July, or as low as $575 for Wednesday flights around late September.


When to Fly to Tallinn

Flying from Chicago, IL (ORD) to Tallinn (TLL) will usually cost between $590 to $1035 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late September with an average ticket price of $578. Due to high demand the most expensive time to fly is late July, with an average price of $1027. Planning your trip to low-cost times can easily save you $449 on economy flights and even more on first-class flights. Generally, any price below $770 can be considered a good price for a round-trip ORD to TLL flight.

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

ORD to TLL Flight Prices

Compared to other flights, the ORD to TLL 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 $0.11, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to TLL, and Tuesday the cheapest day to fly back into ORD. Saturdays are the most expensive days to fly to Tallinn, and Sundays are the most expensive days to return to Chicago. Selecting flights on the least expensive days could save you up to $58 (7%) 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 $755. Return trip prices are from the TLL 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 TLL can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 1 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 TLL while comparing.

Destination alternative #1: Helsinki Vantaa Airport (HEL) in Helsinki

  • 63 miles (101 km) away from TLL
  • Usually 6.56% less expensive than TLL
  • Nonstop flights available

See ORD to HEL flights


Flight Hacking ORD to TLL

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 TLL — but Champion Traveler does!

Hack #1: Stockholm (ORD > ARN > TLL)

  • Price for both tickets: $620
  • Average savings: $150 (19.49%)

See ORD to ARN flights

Hack #2: Oslo (ORD > OSL > TLL)

  • Price for both tickets: $641
  • Average savings: $129 (16.7%)

See ORD to OSL flights

Hack #3: London (ORD > LGW > TLL)

  • Price for both tickets: $663
  • Average savings: $107 (13.84%)

See ORD to LGW flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 29 major airlines flying this route most often: Aeroflot, Air Baltic, Air Canada, Air China, Air France, Alaska, American, ANA, Asiana, Austrian, British Airways, Brussels Airlines, China Airlines, China Southern, Delta, EVA Air, Finnair, Iberia, Icelandair, JAL, KLM, Korean Air, LOT, Lufthansa, SAS, Singapore Airlines, SWISS, Turkish Airlines, United, and potentially more during busy seasons.

How far away is it from Lennart Meri Tallinn Airport to Chicago O’Hare International Airport?

The distance between the two airports is roughly 4460 miles or 7178 kilometers.

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

The real-world flight time for a nonstop ORD to TLL flight is about 9 hour 1 minutes.

How many flights go between Chicago, IL and Tallinn?

It depends on the day of the week and the date, but a typical day might have around 75 available flights from ORD to TLL.


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 TLL
Destination airport name Lennart Meri Tallinn Airport
City Tallinn
Country Estonia
Latitude 59.4
Longitude 24.8


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.