Cheap flights from Chicago O'Hare Intl Airport to Estonia from $345
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 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Chicago O'Hare Intl Airport to Estonia
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
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
SWISS flights from Chicago O'Hare Intl Airport to Estonia
Our best SWISS deals on Chicago O'Hare Intl Airport to Estonia flight tickets
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 April. Flight prices, which tend to average around $548, are often lower during this time because this is during the off-season. If you’re not able to fly to Estonia in April, then December is your next best option. Flight prices from Chicago O'Hare Intl Airport to Estonia during December average around $553.
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 airline that flies from Chicago O'Hare Intl to Estonia?
Turkish Airlines, United Airlines, and Finnair are the most popular carriers operating from Chicago O'Hare Intl to Estonia
What airlines fly to Estonia?
Finnair, United Airlines and Lufthansa are the top three most popular airlines that fly to Estonia from Chicago O'Hare Intl Airport according to our data. Finnair is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Estonia. Keep in mind that there are 4 different airlines that fly to Estonia on a routine basis, so you have a few additional options to choose from.
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
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?
The number of operators available for flights from Chicago O'Hare Intl Airport to Estonia is 4 as of June 2025.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $414 | Free Cancellation | Rating 7.3 1,388 reviews | |||
| PriceFrom $513 | Free Cancellation | Rating 7.6 1,291 reviews | |||
| PriceFrom $528 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $539 | Free Cancellation | Rating 6.8 7,149 reviews |
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.