$1,081+ Cheap flights from Illinois to Tongatapu
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TBU
Jun 21 — Jun 281
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Tongatapu
Keep the following information in mind while searching for Illinois to Tongatapu flight deals. Data was last updated June 16, 2025.
Round-trip from | $1,699 (FlightHub) |
|---|---|
One-way from | $1,081 (Fiji Airways) |
Find flight deals from Illinois to Tongatapu
Cheapest flights from Illinois to TongatapuExplore 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 June 16, 2025.
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 June 16, 2025.
This FlightHub deal was found by Cheapflights users on 6/14. 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.
Tue 7/227:38 pmSTL - TBU
2 stops36h 07mFiji Airways
Sat 8/25:40 amTBU - STL
2 stops32h 51mFiji Airways
Deal found 6/14![Fiji Airways logo]()
$1,699
This FlightHub deal was found by Cheapflights users on 6/14. 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.
Tue 7/15:36 pmORD - TBU
2 stops28h 09mFiji Airways
Tue 7/155:40 amTBU - ORD
2 stops33h 20mFiji Airways
Deal found 6/14![Fiji Airways logo]()
$1,741
This Fiji Airways deal was found by Cheapflights users on 6/14. 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.
Tue 7/297:03 pmORD - TBU
2 stops36h 42mMultiple Airlines
Tue 8/55:50 pmTBU - ORD
2 stops23h 02mMultiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,763
This Booking.com deal was found by Cheapflights users on 6/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/303:35 pmORD - TBU
2 stops25h 35mAir New Zealand
Wed 8/62:35 pmTBU - ORD
2 stops24h 58mAir New Zealand
Deal found 6/15![Air New Zealand logo]()
$2,089
This Air New Zealand deal was found by Cheapflights users on 6/14. 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 Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/226:15 pmSTL - TBU
2 stops22h 55mMultiple Airlines
Sat 8/212:20 pmTBU - STL
3 stops29h 39mMultiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$2,804
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 June 16, 2025.
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
Tue 7/22
7:38 pm-1:45 am
2 stops36h 07m
Nuku‘alofa Fua'Amotu Intl
Sat 8/2
5:40 am-8:31 pm
2 stops32h 51m
$1,699
ChicagoNuku‘alofa
ORD - TBU
ORDTBU
Chicago O'Hare Intl
Tue 7/1
5:36 pm-3:45 pm
2 stops28h 09m
Nuku‘alofa Fua'Amotu Intl
Tue 7/15
5:40 am-9:00 pm
2 stops33h 20m
$1,741
ChicagoNuku‘alofa
ORD - TBU
ORDTBU
Chicago O'Hare Intl
Tue 7/29
7:03 pm-1:45 am
2 stops36h 42m
Nuku‘alofa Fua'Amotu Intl
Tue 8/5
5:50 pm-10:52 pm
2 stops23h 02m
$1,763
ChicagoNuku‘alofa
ORD - TBU
ORDTBU
Chicago O'Hare Intl
Wed 7/30
3:35 pm-11:10 am
2 stops25h 35m
Nuku‘alofa Fua'Amotu Intl
Wed 8/6
2:35 pm-9:33 pm
2 stops24h 58m
$2,089
St. LouisNuku‘alofa
STL - TBU
STLTBU
Lambert-St Louis
Tue 7/22
6:15 pm-11:10 am
2 stops22h 55m
Nuku‘alofa Fua'Amotu Intl
Sat 8/2
12:20 pm-11:59 pm
3 stops29h 39m
$2,804
ChicagoNuku‘alofa
ORD - TBU
ORDTBU
Chicago O'Hare Intl
Thu 7/31
6:20 pm-3:45 pm
2 stops27h 25m
$1,081
ChicagoNuku‘alofa
ORD - TBU
ORDTBU
Chicago O'Hare Intl
Tue 7/29
7:03 pm-1:45 am
2 stops36h 42m
$1,110
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
Rainfall in Tongatapu by month
Plan your trip to Tongatapu by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Tongatapu ranges from 3.7 - 8.3 inches per month. February is typically the wettest month, when rainfall can reach 8.3 in. June is typically the driest time to visit Tongatapu when rainfall is around 3.7 in.
Temperature in Tongatapu by month
Plan your trip to Tongatapu by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Tongatapu, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 71.6 F).
Reviews of airlines servicing Tongatapu
Get insights into the airlines that provide service to Tongatapu. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Tongatapu. Reviews last updated June 16, 2025.
Crew
8.5
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.5
Reviews
1 / 16
6.0
GoodChristopher,Jun 2025
LAX - NAN
Crew
8.5
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.5
Reviews
1 / 16
6.0
GoodChristopher,Jun 2025
LAX - NAN
Crew
8.5
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.5
Reviews
1 / 16
6.0
GoodChristopher,Jun 2025
LAX - NAN