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Tongatapu

$1,168+ Cheap flights from Illinois to Tongatapu

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TBU
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Illinois to Tongatapu

Cheapest flights from Illinois to Tongatapu
Explore the most affordable flight options available from Illinois to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Fiji Airways deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:50 pm
STL
-
TBU
2 stops36h 55m
Fiji Airways
Tue 4/75:40 am
TBU
-
STL
2 stops35h 19m
Fiji Airways
Deal found 2/2$1,168
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:00 pm
ORD
-
TBU
2 stops26h 55m
Fiji Airways
Wed 7/85:40 am
TBU
-
ORD
2 stops33h 58m
Fiji Airways
Deal found 2/1$1,453
This FlightHub deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/277:00 pm
ORD
-
TBU
2 stops36h 45m
Fiji Airways
Tue 7/75:40 am
TBU
-
ORD
2 stops33h 58m
Fiji Airways
Deal found 2/1$1,454
This Fiji Airways deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:38 am
STL
-
TBU
2 stops37h 22m
Multiple Airlines
Wed 3/115:40 am
TBU
-
STL
2 stops36h 18m
Multiple Airlines
Deal found 2/2$1,497
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:00 pm
ORD
-
TBU
2 stops36h 45m
Fiji Airways
Tue 7/75:40 am
TBU
-
ORD
2 stops33h 29m
Fiji Airways
Deal found 2/1$1,546
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:00 pm
ORD
-
TBU
2 stops36h 05m
Fiji Airways
Fri 7/1011:20 am
TBU
-
ORD
2 stops28h 18m
Fiji Airways
Deal found 2/1$1,578
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:00 pm
ORD
-
TBU
2 stops36h 45m
Fiji Airways
Fri 7/35:40 am
TBU
-
ORD
2 stops33h 58m
Fiji Airways
Deal found 2/1$1,596
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:00 pm
ORD
-
TBU
2 stops26h 55m
Fiji Airways
Wed 7/85:40 am
TBU
-
ORD
2 stops33h 58m
Fiji Airways
Deal found 2/1$1,628
This Fiji Airways deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/164:44 pm
ORD
-
TBU
2 stops38h 21m
Fiji Airways
Thu 3/195:00 am
TBU
-
ORD
2 stops33h 40m
Fiji Airways
Deal found 2/1$1,678
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:00 pm
ORD
-
TBU
2 stops36h 45m
Fiji Airways
Sat 7/44:55 pm
TBU
-
ORD
2 stops22h 14m
Fiji Airways
Deal found 2/1$1,746
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:00 pm
ORD
-
TBU
2 stops36h 45m
Fiji Airways
Sat 7/45:40 am
TBU
-
ORD
2 stops41h 39m
Fiji Airways
Deal found 2/1$1,795
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/268:02 pm
ORD
-
TBU
2 stops44h 43m
Air New Zealand
Tue 7/711:55 am
TBU
-
ORD
2 stops26h 40m
Air New Zealand
Deal found 2/1$2,315

Find flight deals from Illinois to Tongatapu

Keep the following information in mind while searching for Illinois to Tongatapu flight deals. Data was last updated February 3, 2026.

Round-trip from

$1,168
(Fiji Airways)
From Illinois to Tongatapu
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Tongatapu 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, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Illinois to Tongatapu that are best for you.

Fly from

Illinois

Fly to

Tongatapu

Route

Depart

Return

Price

St. LouisNuku‘alofa

STL - TBU

STLTBU

Lambert-St Louis

Sat 4/4

6:50 pm-1:45 am

2 stops36h 55m

Nuku‘alofa Fua'Amotu Intl

Tue 4/7

5:40 am-10:59 pm

2 stops35h 19m

$1,168

ChicagoNuku‘alofa

ORD - TBU

ORDTBU

Chicago O'Hare Intl

Sat 6/27

7:00 pm-1:45 am

2 stops36h 45m

Nuku‘alofa Fua'Amotu Intl

Mon 7/6

11:20 am-9:38 pm

2 stops28h 18m

$1,453

ChicagoNuku‘alofa

ORD - TBU

ORDTBU

Chicago O'Hare Intl

Sat 6/27

7:00 pm-1:45 am

2 stops36h 45m

Nuku‘alofa Fua'Amotu Intl

Tue 7/7

5:40 am-9:38 pm

2 stops33h 58m

$1,454

St. LouisNuku‘alofa

STL - TBU

STLTBU

Lambert-St Louis

Wed 3/4

6:38 am-3:00 pm

2 stops37h 22m

Nuku‘alofa Fua'Amotu Intl

Wed 3/11

5:40 am-11:58 pm

2 stops36h 18m

$1,497

ChicagoNuku‘alofa

ORD - TBU

ORDTBU

Chicago O'Hare Intl

Wed 6/24

7:00 pm-1:45 am

2 stops36h 45m

Nuku‘alofa Fua'Amotu Intl

Tue 7/7

5:40 am-9:09 pm

2 stops33h 29m

$1,546

ChicagoNuku‘alofa

ORD - TBU

ORDTBU

Chicago O'Hare Intl

Mon 6/22

7:00 pm-1:05 am

2 stops36h 05m

Nuku‘alofa Fua'Amotu Intl

Tue 7/7

5:40 am-9:38 pm

2 stops33h 58m

$1,546

ChicagoNuku‘alofa

ORD - TBU

ORDTBU

Chicago O'Hare Intl

Mon 6/29

7:00 pm-10:35 am

2 stops21h 35m

Nuku‘alofa Fua'Amotu Intl

Tue 7/7

5:40 am-9:09 pm

2 stops33h 29m

$1,546

ChicagoNuku‘alofa

ORD - TBU

ORDTBU

Chicago O'Hare Intl

Thu 6/25

7:00 pm-3:55 pm

2 stops26h 55m

Nuku‘alofa Fua'Amotu Intl

Fri 7/3

5:40 am-9:38 pm

2 stops33h 58m

$1,546

ChicagoNuku‘alofa

ORD - TBU

ORDTBU

Chicago O'Hare Intl

Sun 6/28

7:00 pm-1:45 am

2 stops36h 45m

Nuku‘alofa Fua'Amotu Intl

Fri 7/3

5:40 am-9:38 pm

2 stops33h 58m

$1,546

ChicagoNuku‘alofa

ORD - TBU

ORDTBU

Chicago O'Hare Intl

Mon 6/29

7:00 pm-1:05 am

2 stops36h 05m

Nuku‘alofa Fua'Amotu Intl

Fri 7/3

5:40 am-9:38 pm

2 stops33h 58m

$1,546

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 14 results
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Best time to book a flight from Illinois to Tongatapu

Have a flexible travel schedule? Discover the best time to fly to Tongatapu from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Tongatapu
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Tongatapu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Tongatapu?

    There are many flights that can get you from Illinois to Tongatapu in 36h 55m. Fly via Fiji Airways to get the fastest option. There are 6852 mi between Illinois and Tongatapu.

  • Can I find deals for flights from Illinois to Tongatapu that include hotel bookings?

    Yes. In addition to deals on Illinois to Tongatapu flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Tongatapu?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Tongatapu.

  • Can I find deals for business class flights from Illinois to Tongatapu?

    Yes. Cheapflights offers flight deals from Illinois to Tongatapu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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