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Cheap flights from Illinois to Thera from $329

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Thera departing on 8/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Thera

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
3:30 pm - 4:50 pmSTL  Lambert-St Louis-JTR Thera Santorini
17h 20m1 stop Frankfurt am Main
Lufthansa Logo
5:40 pm - 1:25 pmJTR  Thera Santorini-STL Lambert-St Louis
27h 45m1 stop Frankfurt am Main
$908Lufthansa
Mon, Aug 24 - Tue, Sep 1
Multiple Airlines Logo
12:59 pm - 8:50 pmSTL  Lambert-St Louis-JTR Thera Santorini
23h 51m2 stops Chicago O'Hare Intl Vienna Intl
Multiple Airlines Logo
5:40 pm - 1:25 pmJTR  Thera Santorini-STL Lambert-St Louis
27h 45m1 stop Frankfurt am Main
$923Multiple Airlines
Mon, Aug 24 - Tue, Sep 1
Multiple Airlines Logo
12:59 pm - 8:50 pmSTL  Lambert-St Louis-JTR Thera Santorini
23h 51m2 stops Chicago O'Hare Intl Vienna Intl
Multiple Airlines Logo
5:40 pm - 7:11 pmJTR  Thera Santorini-STL Lambert-St Louis
33h 31m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
$923Multiple Airlines
Mon, Aug 24 - Tue, Sep 1
Multiple Airlines Logo
11:25 am - 6:55 pmORD  Chicago O'Hare Intl-JTR Thera Santorini
23h 30m2 stops Istanbul Athens Eleftherios V.
Multiple Airlines Logo
11:20 pm - 9:40 amJTR  Thera Santorini-ORD Chicago O'Hare Intl
18h 20m2 stops Athens Eleftherios V. Istanbul
$931Multiple Airlines
Sat, Sep 26 - Tue, Oct 6
Lufthansa Logo
3:30 pm - 4:50 pmSTL  Lambert-St Louis-JTR Thera Santorini
17h 20m1 stop Frankfurt am Main
Lufthansa Logo
2:20 pm - 1:25 pmJTR  Thera Santorini-STL Lambert-St Louis
31h 05m1 stop Frankfurt am Main
$937Lufthansa
Mon, Sep 7 - Mon, Sep 14
Lufthansa Logo
3:30 pm - 4:50 pmSTL  Lambert-St Louis-JTR Thera Santorini
17h 20m1 stop Frankfurt am Main
Lufthansa Logo
2:20 pm - 10:00 pmJTR  Thera Santorini-STL Lambert-St Louis
39h 40m2 stops Frankfurt am Main Chicago O'Hare Intl
$950Lufthansa
Mon, Sep 7 - Mon, Sep 14
Multiple Airlines Logo
10:37 am - 2:15 pmORD  Chicago O'Hare Intl-JTR Thera Santorini
19h 38m2 stops Montreal Pierre Elliott Trudeau Intl Athens Eleftherios V.
Multiple Airlines Logo
9:00 am - 7:58 pmJTR  Thera Santorini-ORD Chicago O'Hare Intl
18h 58m2 stops Athens Eleftherios V. Toronto Pearson Intl
$956Multiple Airlines
Wed, Nov 11 - Tue, Nov 17
Lufthansa Logo
3:35 pm - 6:35 pmORD  Chicago O'Hare Intl-JTR Thera Santorini
19h 00m1 stop Munich Franz Josef Strauss
Lufthansa Logo
5:45 pm - 7:55 pmJTR  Thera Santorini-ORD Chicago O'Hare Intl
34h 10m1 stop Frankfurt am Main
$979Lufthansa
Thu, Oct 15 - Thu, Oct 22
SWISS Logo
2:20 pm - 8:00 pmORD  Chicago O'Hare Intl-JTR Thera Santorini
21h 40m1 stop Zurich
SWISS Logo
8:55 pm - 12:35 pmJTR  Thera Santorini-ORD Chicago O'Hare Intl
23h 40m1 stop Zurich
$1,053SWISS
Sun, Sep 27 - Sun, Oct 4
SWISS Logo
2:20 pm - 8:00 pmORD  Chicago O'Hare Intl-JTR Thera Santorini
21h 40m1 stop Zurich
SWISS Logo
8:55 pm - 12:35 pmJTR  Thera Santorini-ORD Chicago O'Hare Intl
23h 40m1 stop Zurich
$1,075SWISS
Sun, Sep 27 - Sun, Oct 4

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Lufthansa flights from Illinois to Thera

Our best Lufthansa deals on Illinois to Thera flight tickets
Lufthansa
Aug 24
STL3:30 pmLambert-St Louis
17h 20m
1 stop
JTR4:50 pmThera Santorini
Sep 1
JTR5:40 pmThera Santorini
27h 45m
1 stop
STL1:25 pmLambert-St Louis
$908
Lufthansa
Sep 7
STL3:30 pmLambert-St Louis
17h 20m
1 stop
JTR4:50 pmThera Santorini
Sep 14
JTR2:20 pmThera Santorini
31h 05m
1 stop
STL1:25 pmLambert-St Louis
$937
Lufthansa
Sep 7
STL3:30 pmLambert-St Louis
17h 20m
1 stop
JTR4:50 pmThera Santorini
Sep 14
JTR2:20 pmThera Santorini
39h 40m
2 stops
STL10:00 pmLambert-St Louis
$950

Air Canada flights from Illinois to Thera

Our best Air Canada deals on Illinois to Thera flight tickets
Air Canada
Nov 11
ORD10:15 amChicago O'Hare Intl
20h 00m
3 stops
JTR2:15 pmThera Santorini
Nov 17
JTR8:10 amThera Santorini
21h 53m
2 stops
ORD10:03 pmChicago O'Hare Intl
$984
Air Canada
Nov 8
ORD7:05 amChicago O'Hare Intl
23h 10m
2 stops
JTR2:15 pmThera Santorini
Nov 15
JTR8:10 amThera Santorini
19h 42m
2 stops
ORD7:52 pmChicago O'Hare Intl
$1,021
Air Canada
Nov 8
ORD11:05 amChicago O'Hare Intl
19h 10m
3 stops
JTR2:15 pmThera Santorini
Nov 15
JTR8:10 amThera Santorini
19h 42m
2 stops
ORD7:52 pmChicago O'Hare Intl
$1,029

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Thera 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 August 9, 2026.
Use the filters below to find and compare flights from Illinois to Thera that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisThera

STL Lambert-St Louis - JTR Thera Santorini

STLJTR

Lambert-St Louis

Mon 8/24

3:30 pm-4:50 pm

1 stop17h 20m

Thera Santorini

Tue 9/1

5:40 pm-1:25 pm

1 stop27h 45m

$908

St. LouisThera

STL Lambert-St Louis - JTR Thera Santorini

STLJTR

Lambert-St Louis

Mon 8/24

12:59 pm-8:50 pm

2 stops23h 51m

Thera Santorini

Tue 9/1

5:40 pm-1:25 pm

1 stop27h 45m

$923

St. LouisThera

STL Lambert-St Louis - JTR Thera Santorini

STLJTR

Lambert-St Louis

Mon 8/24

12:59 pm-8:50 pm

2 stops23h 51m

Thera Santorini

Tue 9/1

5:40 pm-7:11 pm

2 stops33h 31m

$923

ChicagoThera

ORD Chicago O'Hare Intl - JTR Thera Santorini

ORDJTR

Chicago O'Hare Intl

Sat 9/26

11:25 am-6:55 pm

2 stops23h 30m

Thera Santorini

Tue 10/6

11:20 pm-9:40 am

2 stops18h 20m

$931

St. LouisThera

STL Lambert-St Louis - JTR Thera Santorini

STLJTR

Lambert-St Louis

Mon 9/7

3:30 pm-4:50 pm

1 stop17h 20m

Thera Santorini

Mon 9/14

2:20 pm-1:25 pm

1 stop31h 05m

$937

St. LouisThera

STL Lambert-St Louis - JTR Thera Santorini

STLJTR

Lambert-St Louis

Mon 9/7

3:30 pm-4:50 pm

1 stop17h 20m

Thera Santorini

Mon 9/14

2:20 pm-10:00 pm

2 stops39h 40m

$950
Quickest round-trip

ChicagoThera

ORD Chicago O'Hare Intl - JTR Thera Santorini

ORDJTR

Chicago O'Hare Intl

Wed 11/11

10:37 am-2:15 pm

2 stops19h 38m

Thera Santorini

Tue 11/17

9:00 am-7:58 pm

2 stops18h 58m

$956

ChicagoThera

ORD Chicago O'Hare Intl - JTR Thera Santorini

ORDJTR

Chicago O'Hare Intl

Thu 10/15

3:35 pm-6:35 pm

1 stop19h 00m

Thera Santorini

Thu 10/22

5:45 pm-7:55 pm

1 stop34h 10m

$979

ChicagoThera

ORD Chicago O'Hare Intl - JTR Thera Santorini

ORDJTR

Chicago O'Hare Intl

Sun 9/27

2:20 pm-8:00 pm

1 stop21h 40m

Thera Santorini

Sun 10/4

8:55 pm-12:35 pm

1 stop23h 40m

$1,053

ChicagoThera

ORD Chicago O'Hare Intl - JTR Thera Santorini

ORDJTR

Chicago O'Hare Intl

Sun 9/27

2:20 pm-8:00 pm

1 stop21h 40m

Thera Santorini

Sun 10/4

8:55 pm-12:35 pm

1 stop23h 40m

$1,075

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Illinois to Thera

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

Can stopping save me money on Illinois to Thera flights?

You could potentially save up to 69% on your flight if you consider stops on a Illinois to Thera flight.

Cheap Illinois to Thera flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Thera

Fastest flight time

13h 25m

Direct flights

None
The fastest flight from Illinois to Thera takes 13h 25m
There are no direct flights from Illinois to Thera. There are no popular flight routes from Illinois to Thera.
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Frequently asked questions about flying from Illinois to Thera

  • When did momondo last update prices for flights from Illinois to Thera Santorini Airport?

    Prices for flights from Illinois to Thera Santorini Airport were last updated today.

  • How many operators does momondo search for flights from Illinois to Thera Santorini Airport?

  • How old do you have to be to fly from Illinois to Thera Santorini Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Thera Santorini Airport.

  • What documentation or ID do you need to fly to Thera Santorini Airport?

    The travel and health documents you'll need for your trip to Thera Santorini Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Thera Santorini Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Thera

Compare and see reviews for airlines that fly from Illinois to Thera with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $333Free CancellationRating
7.5
2,035 reviews
Search SWISS flights

Traveling to a place near Thera?

Book flights to Thera if you plan to visit one of these locations
Oia
Imerovigli
Firostefani
Ios
Kamari
Perissa
Megalochori
Mylopotas
Pyrgos Kallistis
Karterados

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Thera?

Finding the right flight to Thera from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Thera quick and easy, saving you time and money.

Can I find flights from Illinois to Thera with flexible booking policies on momondo?

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

How can momondo help me find flights from Illinois to Thera?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Thera from Illinois.

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

Yes. momondo can track prices for Illinois to Thera 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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