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Cheap flights from Illinois to Thera from $380

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 4/22. 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

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Find the cheapest flights from Illinois to Thera

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
9:45 am - 4:20 pm
STL
-
JTR
22h 35m
2 stops
British Airways Logo
5:10 pm - 8:19 pm
JTR
-
STL
35h 09m
2 stops
$880British Airways
Tue, Aug 25 - Wed, Sep 2
British Airways Logo
7:23 am - 4:20 pm
STL
-
JTR
24h 57m
2 stops
British Airways Logo
5:10 pm - 10:00 pm
JTR
-
STL
36h 50m
2 stops
$918British Airways
Tue, Aug 25 - Wed, Sep 2
British Airways Logo
9:45 am - 4:20 pm
STL
-
JTR
22h 35m
2 stops
British Airways Logo
5:10 pm - 8:19 pm
JTR
-
STL
35h 09m
2 stops
$930British Airways
Tue, Aug 25 - Wed, Sep 2
Multiple Airlines Logo
1:18 pm - 8:50 pm
STL
-
JTR
23h 32m
2 stops
Multiple Airlines Logo
7:10 pm - 3:38 pm
JTR
-
STL
28h 28m
2 stops
$965Multiple Airlines
Mon, Aug 24 - Wed, Sep 2
Multiple Airlines Logo
5:10 pm - 3:50 pm
ORD
-
JTR
14h 40m
1 stop
Multiple Airlines Logo
11:20 pm - 7:57 pm
JTR
-
ORD
28h 37m
2 stops
$990Multiple Airlines
Mon, May 11 - Tue, May 26
British Airways Logo
9:35 pm - 4:15 pm
STL
-
JTR
34h 40m
1 stop
British Airways Logo
5:10 pm - 8:19 pm
JTR
-
STL
35h 09m
2 stops
$1,013British Airways
Tue, Aug 25 - Wed, Sep 2
British Airways Logo
9:35 pm - 4:15 pm
STL
-
JTR
34h 40m
1 stop
British Airways Logo
5:10 pm - 11:51 pm
JTR
-
STL
38h 41m
2 stops
$1,023British Airways
Tue, Aug 25 - Wed, Sep 2
British Airways Logo
9:40 pm - 1:50 pm
STL
-
JTR
32h 10m
1 stop
British Airways Logo
5:25 pm - 7:30 pm
JTR
-
STL
34h 05m
1 stop
$1,028British Airways
Sun, Aug 23 - Mon, Aug 31
Lufthansa Logo
1:18 pm - 4:55 pm
STL
-
JTR
19h 37m
2 stops
Lufthansa Logo
7:10 pm - 3:38 pm
JTR
-
STL
28h 28m
2 stops
$1,056Lufthansa
Wed, Aug 26 - Wed, Sep 2
Lufthansa Logo
3:30 pm - 4:50 pm
STL
-
JTR
17h 20m
1 stop
Lufthansa Logo
7:10 pm - 3:38 pm
JTR
-
STL
28h 28m
2 stops
$1,057Lufthansa
Mon, Aug 24 - Wed, Sep 2

Lufthansa flights from Illinois to Thera

Our best Lufthansa deals on Illinois to Thera flight tickets
Lufthansa
Aug 26
STL1:18 pmLambert-St Louis
19h 37m
2 stops
JTR4:55 pmThera Santorini
Sep 2
JTR7:10 pmThera Santorini
28h 28m
2 stops
STL3:38 pmLambert-St Louis
$1,056
Lufthansa
Aug 24
STL3:30 pmLambert-St Louis
17h 20m
1 stop
JTR4:50 pmThera Santorini
Sep 2
JTR7:10 pmThera Santorini
28h 28m
2 stops
STL3:38 pmLambert-St Louis
$1,057
Lufthansa
Apr 25
STL11:37 amLambert-St Louis
21h 18m
2 stops
JTR4:55 pmThera Santorini
May 2
JTR7:35 pmThera Santorini
25h 50m
2 stops
STL1:25 pmLambert-St Louis
$1,085

Delta flights from Illinois to Thera

Our best Delta deals on Illinois to Thera flight tickets
Delta
Aug 24
STL7:20 amLambert-St Louis
21h 30m
2 stops
JTR12:50 pmThera Santorini
Sep 5
JTR1:35 pmThera Santorini
27h 09m
2 stops
STL8:44 amLambert-St Louis
$1,124
Delta
Aug 23
STL11:51 amLambert-St Louis
16h 49m
2 stops
JTR12:40 pmThera Santorini
Aug 30
JTR1:35 pmThera Santorini
34h 22m
2 stops
STL3:57 pmLambert-St Louis
$1,238

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 March 27, 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 - JTR

STLJTR

Lambert-St Louis

Tue 8/25

9:45 am-4:20 pm

2 stops22h 35m

Thera Santorini

Wed 9/2

5:10 pm-8:19 pm

2 stops35h 09m

$880

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Tue 8/25

7:23 am-4:20 pm

2 stops24h 57m

Thera Santorini

Wed 9/2

5:10 pm-10:00 pm

2 stops36h 50m

$918

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Tue 8/25

9:45 am-4:20 pm

2 stops22h 35m

Thera Santorini

Wed 9/2

5:10 pm-8:19 pm

2 stops35h 09m

$930

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Mon 8/24

1:18 pm-8:50 pm

2 stops23h 32m

Thera Santorini

Wed 9/2

7:10 pm-3:38 pm

2 stops28h 28m

$965
Quickest round-trip

ChicagoThera

ORD - JTR

ORDJTR

Chicago O'Hare Intl

Mon 5/11

5:10 pm-3:50 pm

1 stop14h 40m

Thera Santorini

Tue 5/26

11:20 pm-7:57 pm

2 stops28h 37m

$990

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Tue 8/25

9:35 pm-4:15 pm

1 stop34h 40m

Thera Santorini

Wed 9/2

5:10 pm-8:19 pm

2 stops35h 09m

$1,013

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Tue 8/25

9:35 pm-4:15 pm

1 stop34h 40m

Thera Santorini

Wed 9/2

5:10 pm-11:51 pm

2 stops38h 41m

$1,023

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Sun 8/23

9:40 pm-1:50 pm

1 stop32h 10m

Thera Santorini

Mon 8/31

5:25 pm-7:30 pm

1 stop34h 05m

$1,028

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Wed 8/26

1:18 pm-4:55 pm

2 stops19h 37m

Thera Santorini

Wed 9/2

7:10 pm-3:38 pm

2 stops28h 28m

$1,056

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Mon 8/24

3:30 pm-4:50 pm

1 stop17h 20m

Thera Santorini

Wed 9/2

7:10 pm-3:38 pm

2 stops28h 28m

$1,057

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 Thera from

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 58% 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

12h 40m

Direct flights

None
The fastest flight from Illinois to Thera takes 12h 40m
There are no direct flights from Illinois to Thera. There are no popular flight routes from Illinois to Thera.
Search flight deals

  • 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
British AirwaysPriceFrom $602Free CancellationRating
6.7
7,822 reviews
Search British Airways flights

Traveling to a place near Thera?

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