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Cheap flights from Chicago O'Hare Intl Airport to Estonia from $252

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Estonia departing on 2/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago O'Hare Intl Airport to Estonia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
10:11 am - 10:20 am
ORD
-
TLL
16h 09m2 stops
Scandinavian Airlines Logo
3:45 pm - 4:45 pm
TLL
-
ORD
33h 00m1 stop
$379Scandinavian Airlines
Tue, Feb 24 - Sat, Feb 28
Scandinavian Airlines Logo
10:11 am - 3:10 pm
ORD
-
TLL
20h 59m2 stops
Scandinavian Airlines Logo
4:10 pm - 4:45 pm
TLL
-
ORD
32h 35m2 stops
$381Scandinavian Airlines
Tue, Feb 24 - Sat, Feb 28
Scandinavian Airlines Logo
6:59 pm - 10:20 am
ORD
-
TLL
31h 21m2 stops
Scandinavian Airlines Logo
3:45 pm - 4:45 pm
TLL
-
ORD
33h 00m1 stop
$392Scandinavian Airlines
Fri, Feb 6 - Sun, Feb 8
Scandinavian Airlines Logo
6:59 pm - 10:20 am
ORD
-
TLL
31h 21m2 stops
Scandinavian Airlines Logo
4:10 pm - 4:45 pm
TLL
-
ORD
32h 35m2 stops
$394Scandinavian Airlines
Fri, Feb 6 - Sun, Feb 8
Scandinavian Airlines Logo
6:59 pm - 10:20 am
ORD
-
TLL
31h 21m2 stops
Scandinavian Airlines Logo
6:25 am - 4:45 pm
TLL
-
ORD
18h 20m1 stop
$401Scandinavian Airlines
Fri, Feb 6 - Sat, Feb 14
Scandinavian Airlines Logo
6:59 pm - 10:20 am
ORD
-
TLL
31h 21m2 stops
Scandinavian Airlines Logo
4:20 pm - 4:55 pm
TLL
-
ORD
32h 35m2 stops
$402Scandinavian Airlines
Fri, Feb 6 - Sat, Feb 14
Multiple Airlines Logo
6:25 pm - 1:00 am
ORD
-
TAY
22h 35m2 stops
Multiple Airlines Logo
6:00 am - 8:39 pm
TAY
-
ORD
22h 39m2 stops
$679Multiple Airlines
Sat, Jan 17 - Sat, Jan 24
Turkish Airlines Logo
8:20 pm - 2:15 pm
ORD
-
TAY
33h 55m2 stops
Turkish Airlines Logo
2:40 pm - 6:25 pm
TAY
-
ORD
59h 45m2 stops
$878Turkish Airlines
Mon, Mar 2 - Fri, Mar 6
Turkish Airlines Logo
8:20 pm - 2:15 pm
ORD
-
TAY
33h 55m2 stops
Turkish Airlines Logo
2:40 pm - 6:25 pm
TAY
-
ORD
59h 45m2 stops
$1,033Turkish Airlines
Mon, Mar 2 - Fri, Mar 6
Turkish Airlines Logo
8:20 pm - 2:15 pm
ORD
-
TAY
57h 55m2 stops
Turkish Airlines Logo
2:40 pm - 6:25 pm
TAY
-
ORD
59h 45m2 stops
$1,042Turkish Airlines
Mon, Mar 2 - Fri, Mar 6

Scandinavian Airlines flights from Chicago O'Hare Intl Airport to Estonia

Our best Scandinavian Airlines deals on Chicago O'Hare Intl Airport to Estonia flight tickets
Scandinavian Airlines
Feb 24
ORD10:11 amChicago O'Hare Intl
16h 09m
2 stops
TLL10:20 amTallinn
Feb 28
TLL3:45 pmTallinn
33h 00m
1 stop
ORD4:45 pmChicago O'Hare Intl
$379
Find similar
Scandinavian Airlines
Feb 24
ORD10:11 amChicago O'Hare Intl
20h 59m
2 stops
TLL3:10 pmTallinn
Feb 28
TLL4:10 pmTallinn
32h 35m
2 stops
ORD4:45 pmChicago O'Hare Intl
$381
Find similar
Scandinavian Airlines
Feb 6
ORD6:59 pmChicago O'Hare Intl
31h 21m
2 stops
TLL10:20 amTallinn
Feb 8
TLL3:45 pmTallinn
33h 00m
1 stop
ORD4:45 pmChicago O'Hare Intl
$392
Find similar

Lufthansa flights from Chicago O'Hare Intl Airport to Estonia

Our best Lufthansa deals on Chicago O'Hare Intl Airport to Estonia flight tickets
Lufthansa
Jan 11
ORD9:50 pmChicago O'Hare Intl
18h 15m
1 stop
TLL12:05 amTallinn
Jan 27
TLL6:15 amTallinn
17h 05m
1 stop
ORD3:20 pmChicago O'Hare Intl
$471
Find similar
Lufthansa
Apr 26
ORD9:40 pmChicago O'Hare Intl
19h 00m
1 stop
TLL12:40 amTallinn
May 3
TLL6:10 amTallinn
14h 45m
1 stop
ORD12:55 pmChicago O'Hare Intl
$496
Find similar
Lufthansa
Apr 26
ORD9:40 pmChicago O'Hare Intl
19h 00m
1 stop
TLL12:40 amTallinn
May 3
TLL6:10 amTallinn
14h 45m
1 stop
ORD12:55 pmChicago O'Hare Intl
$522
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Estonia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Estonia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoTallinn

ORD - TLL

ORDTLL

Chicago O'Hare Intl

Tue 2/24

10:11 am-10:20 am

2 stops16h 09m

Tallinn

Sat 2/28

3:45 pm-4:45 pm

1 stop33h 00m

$379

ChicagoTallinn

ORD - TLL

ORDTLL

Chicago O'Hare Intl

Tue 2/24

10:11 am-3:10 pm

2 stops20h 59m

Tallinn

Sat 2/28

4:10 pm-4:45 pm

2 stops32h 35m

$381

ChicagoTallinn

ORD - TLL

ORDTLL

Chicago O'Hare Intl

Fri 2/6

6:59 pm-10:20 am

2 stops31h 21m

Tallinn

Sun 2/8

3:45 pm-4:45 pm

1 stop33h 00m

$392

ChicagoTallinn

ORD - TLL

ORDTLL

Chicago O'Hare Intl

Fri 2/6

6:59 pm-10:20 am

2 stops31h 21m

Tallinn

Sun 2/8

4:10 pm-4:45 pm

2 stops32h 35m

$394

ChicagoTallinn

ORD - TLL

ORDTLL

Chicago O'Hare Intl

Fri 2/6

6:59 pm-10:20 am

2 stops31h 21m

Tallinn

Sat 2/14

6:25 am-4:45 pm

1 stop18h 20m

$401

ChicagoTallinn

ORD - TLL

ORDTLL

Chicago O'Hare Intl

Fri 2/6

6:59 pm-10:20 am

2 stops31h 21m

Tallinn

Sat 2/14

4:20 pm-4:55 pm

2 stops32h 35m

$402

ChicagoTartu

ORD - TAY

ORDTAY

Chicago O'Hare Intl

Sat 1/17

6:25 pm-1:00 am

2 stops22h 35m

Tartu

Sat 1/24

6:00 am-8:39 pm

2 stops22h 39m

$679

ChicagoTartu

ORD - TAY

ORDTAY

Chicago O'Hare Intl

Mon 3/2

8:20 pm-2:15 pm

2 stops33h 55m

Tartu

Fri 3/6

2:40 pm-6:25 pm

2 stops59h 45m

$878

ChicagoTartu

ORD - TAY

ORDTAY

Chicago O'Hare Intl

Mon 3/2

8:20 pm-2:15 pm

2 stops33h 55m

Tartu

Fri 3/6

2:40 pm-6:25 pm

2 stops59h 45m

$1,033

ChicagoTartu

ORD - TAY

ORDTAY

Chicago O'Hare Intl

Mon 3/2

8:20 pm-2:15 pm

2 stops57h 55m

Tartu

Fri 3/6

2:40 pm-6:25 pm

2 stops59h 45m

$1,042

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Estonia from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Estonia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Estonia?

The cheapest month to fly to Estonia from Chicago O'Hare Intl Airport is in October. Flight prices, which tend to average around $439, are often lower during this time because this is during the off-season. If you’re not able to fly to Estonia in October, then September is your next best option. Flight prices from Chicago O'Hare Intl Airport to Estonia during September average around $485.

What is the cheapest day to depart on your flight to Estonia?

On average, the least expensive day to fly to Estonia from Chicago O'Hare Intl Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $651. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Estonia on Monday is $962.

What is the cheapest time of day to depart on your flight to Estonia?

Our data shows that the cheapest Chicago O'Hare Intl Airport to Estonia flights are usually those with departure times in the evening. Our users have found flights to Estonia in the evening for as low as $702. Try not to purchase tickets at noon because they tend to be around $851. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Chicago O'Hare Intl Airport to Estonia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Estonia

Fastest flight time

11h 50m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Estonia takes 11h 50m
There are no direct flights from Chicago O'Hare Intl Airport to Estonia. There are no popular flight routes from Chicago O'Hare Intl Airport to Estonia.
Search flight deals

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Estonia?

    Prices for flights from Chicago O'Hare Intl Airport to Estonia were last updated today.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Estonia?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Estonia?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Estonia.

  • What documentation or ID do you need to fly to Estonia?

    The required travel and health documents for your Estonia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Estonia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Chicago O'Hare Intl Airport to Estonia

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Estonia with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $433Free CancellationRating
7.4
1,592 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $534Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
LufthansaPriceFrom $535Free CancellationRating
6.8
7,612 reviews
Search Lufthansa flights
FinnairPriceFrom $606Free CancellationRating
7.6
1,334 reviews
Search Finnair flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Estonia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Estonia from Chicago.

Can I find flights from Chicago to Estonia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to Estonia flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to Estonia?

momondo provides multiple filters to help you find the best flight to Estonia from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago to Estonia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Chicago to Estonia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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