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Cheap flights from Illinois to Thera from $454

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 9/1. 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
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.
Multiple Airlines Logo
3:45 pm - 10:30 pm
ORD
-
JTR
22h 45m
2 stops
Multiple Airlines Logo
9:40 pm - 2:00 pm
JTR
-
ORD
24h 20m
1 stop
$1,008Multiple Airlines
Tue, Sep 22 - Sat, Sep 26
Iberia Logo
10:16 am - 10:50 pm
STL
-
JTR
28h 34m
2 stops
Iberia Logo
9:25 pm - 6:54 pm
JTR
-
STL
29h 29m
2 stops
$1,043Iberia
Fri, Aug 21 - Fri, Aug 28
Lufthansa Logo
1:13 pm - 4:55 pm
STL
-
JTR
19h 42m
2 stops
Lufthansa Logo
7:10 pm - 3:46 pm
JTR
-
STL
28h 36m
2 stops
$1,045Lufthansa
Sat, Jul 4 - Wed, Jul 15
Multiple Airlines Logo
4:55 pm - 10:05 pm
ORD
-
JTR
21h 10m
2 stops
Multiple Airlines Logo
9:40 pm - 2:00 pm
JTR
-
ORD
24h 20m
1 stop
$1,054Multiple Airlines
Sat, Sep 19 - Sat, Sep 26
British Airways Logo
9:40 pm - 1:50 pm
STL
-
JTR
32h 10m
1 stop
British Airways Logo
5:10 pm - 8:08 pm
JTR
-
STL
34h 58m
2 stops
$1,057British Airways
Sun, Sep 27 - Sun, Oct 4
Lufthansa Logo
1:13 pm - 4:50 pm
STL
-
JTR
19h 37m
2 stops
Lufthansa Logo
7:10 pm - 3:46 pm
JTR
-
STL
28h 36m
2 stops
$1,058Lufthansa
Sat, Jul 4 - Wed, Jul 15
Multiple Airlines Logo
4:50 pm - 4:25 pm
ORD
-
JTR
39h 35m
2 stops
Multiple Airlines Logo
8:25 pm - 6:05 pm
JTR
-
ORD
29h 40m
2 stops
$1,061Multiple Airlines
Sat, Oct 17 - Sat, Oct 24
Lufthansa Logo
3:35 pm - 4:55 pm
ORD
-
JTR
17h 20m
1 stop
Lufthansa Logo
7:35 pm - 7:25 pm
JTR
-
ORD
31h 50m
1 stop
$1,066Lufthansa
Sat, Oct 17 - Sat, Oct 24
Multiple Airlines Logo
3:45 pm - 8:10 pm
ORD
-
JTR
20h 25m
2 stops
Multiple Airlines Logo
7:35 pm - 7:25 pm
JTR
-
ORD
31h 50m
1 stop
$1,067Multiple Airlines
Sat, Oct 17 - Sat, Oct 24
British Airways Logo
7:44 am - 1:55 pm
STL
-
JTR
22h 11m
2 stops
British Airways Logo
5:10 pm - 8:08 pm
JTR
-
STL
34h 58m
2 stops
$1,078British Airways
Sun, Sep 27 - Sun, Oct 4

Lufthansa flights from Illinois to Thera

Our best Lufthansa deals on Illinois to Thera flight tickets
Lufthansa
Jul 4
STL1:13 pmLambert-St Louis
19h 42m
2 stops
JTR4:55 pmThera Santorini
Jul 15
JTR7:10 pmThera Santorini
28h 36m
2 stops
STL3:46 pmLambert-St Louis
$1,045
Lufthansa
Jul 4
STL1:13 pmLambert-St Louis
19h 37m
2 stops
JTR4:50 pmThera Santorini
Jul 15
JTR7:10 pmThera Santorini
28h 36m
2 stops
STL3:46 pmLambert-St Louis
$1,058
Lufthansa
Oct 17
ORD3:35 pmChicago O'Hare Intl
17h 20m
1 stop
JTR4:55 pmThera Santorini
Oct 24
JTR7:35 pmThera Santorini
31h 50m
1 stop
ORD7:25 pmChicago O'Hare Intl
$1,066

British Airways flights from Illinois to Thera

Our best British Airways deals on Illinois to Thera flight tickets
British Airways
Sep 27
STL9:40 pmLambert-St Louis
32h 10m
1 stop
JTR1:50 pmThera Santorini
Oct 4
JTR5:10 pmThera Santorini
34h 58m
2 stops
STL8:08 pmLambert-St Louis
$1,057
British Airways
Sep 27
STL7:44 amLambert-St Louis
22h 11m
2 stops
JTR1:55 pmThera Santorini
Oct 4
JTR5:10 pmThera Santorini
34h 58m
2 stops
STL8:08 pmLambert-St Louis
$1,078
British Airways
Aug 19
ORD9:15 pmChicago O'Hare Intl
32h 50m
1 stop
JTR2:05 pmThera Santorini
Aug 26
JTR5:10 pmThera Santorini
28h 40m
1 stop
ORD1:50 pmChicago O'Hare Intl
$1,190

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 May 14, 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

ChicagoThera

ORD - JTR

ORDJTR

Chicago O'Hare Intl

Tue 9/22

3:45 pm-10:30 pm

2 stops22h 45m

Thera Santorini

Sat 9/26

9:40 pm-2:00 pm

1 stop24h 20m

$1,008

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Fri 8/21

10:16 am-10:50 pm

2 stops28h 34m

Thera Santorini

Fri 8/28

9:25 pm-6:54 pm

2 stops29h 29m

$1,043

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Sat 7/4

1:13 pm-4:55 pm

2 stops19h 42m

Thera Santorini

Wed 7/15

7:10 pm-3:46 pm

2 stops28h 36m

$1,045
Quickest round-trip

ChicagoThera

ORD - JTR

ORDJTR

Chicago O'Hare Intl

Sat 9/19

4:55 pm-10:05 pm

2 stops21h 10m

Thera Santorini

Sat 9/26

9:40 pm-2:00 pm

1 stop24h 20m

$1,054

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Sun 9/27

9:40 pm-1:50 pm

1 stop32h 10m

Thera Santorini

Sun 10/4

5:10 pm-8:08 pm

2 stops34h 58m

$1,057

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Sat 7/4

1:13 pm-4:50 pm

2 stops19h 37m

Thera Santorini

Wed 7/15

7:10 pm-3:46 pm

2 stops28h 36m

$1,058

ChicagoThera

ORD - JTR

ORDJTR

Chicago O'Hare Intl

Sat 10/17

4:50 pm-4:25 pm

2 stops39h 35m

Thera Santorini

Sat 10/24

8:25 pm-6:05 pm

2 stops29h 40m

$1,061

ChicagoThera

ORD - JTR

ORDJTR

Chicago O'Hare Intl

Sat 10/17

3:35 pm-4:55 pm

1 stop17h 20m

Thera Santorini

Sat 10/24

7:35 pm-7:25 pm

1 stop31h 50m

$1,066

ChicagoThera

ORD - JTR

ORDJTR

Chicago O'Hare Intl

Sat 10/17

3:45 pm-8:10 pm

2 stops20h 25m

Thera Santorini

Sat 10/24

7:35 pm-7:25 pm

1 stop31h 50m

$1,067

St. LouisThera

STL - JTR

STLJTR

Lambert-St Louis

Sun 9/27

7:44 am-1:55 pm

2 stops22h 11m

Thera Santorini

Sun 10/4

5:10 pm-8:08 pm

2 stops34h 58m

$1,078

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 31% 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

16h 25m

Direct flights

None
The fastest flight from Illinois to Thera takes 16h 25m
There are no direct flights from Illinois to Thera. There are no popular flight routes from Illinois to Thera.
Search flight deals

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
1,945 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
Kamari
Pyrgos Kallistis
Firostefani
Ios
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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