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$380+ Cheap flights from Illinois to Sri Lanka

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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CMB
Jun 28 — Jul 51
Sat 6/28
Sat 7/5
1 adult, Economy
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Cheap flight deals from Illinois to Sri Lanka

Keep the following information in mind while searching for Illinois to Sri Lanka flight deals. Data was last updated June 23, 2025.

Round-trip from

$1,246
(FlightHub)

One-way from

$380
(SmartFares)

Popular in

December

Cheapest in

April

Average price

$1,511
From Illinois to Sri Lanka
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One-way flight from Illinois to Sri Lanka
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Highest demand for flights based on searches. 16% potential increase in price ($271 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($64 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Illinois to Sri Lanka

Cheapest flights from Illinois to Sri Lanka
Explore the most affordable flight options available from Illinois to Sri Lanka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 23, 2025.

This Booking.com deal was found by Cheapflights users on 6/23. 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.
Tue 6/2411:25 amORD - CMB
2 stops37h 55mIndiGo
Tue 7/89:55 pmCMB - ORD
2 stops30h 30mIndiGo
Deal found 6/23$1,245
This FlightHub deal was found by Cheapflights users on 6/21. 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.
Mon 8/116:00 amORD - CMB
2 stops34h 35mQatar Airways
Wed 10/83:35 amCMB - ORD
1 stop22h 00mQatar Airways
Deal found 6/21$1,246
This Travelocity deal was found by Cheapflights users on 6/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:20 pmORD - CMB
1 stop21h 15mMultiple Airlines
Wed 10/83:35 amCMB - ORD
1 stop22h 00mMultiple Airlines
Deal found 6/20$1,249
This oojo deal was found by Cheapflights users on 6/23. 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 7/3112:15 pmORD - CMB
1 stop41h 20mAir India
Sat 8/98:20 amCMB - ORD
2 stops36h 25mAir India
Deal found 6/23$1,250
This Indian Eagle deal was found by Cheapflights users on 6/20. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/128:35 pmORD - CMB
2 stops35h 25mEmirates
Mon 9/12:55 amCMB - ORD
1 stop23h 20mEmirates
Deal found 6/20$1,255
This Trip.com deal was found by Cheapflights users on 6/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/61:55 pmORD - CMB
1 stop32h 05mEtihad Airways
Mon 8/254:30 pmCMB - ORD
1 stop26h 45mEtihad Airways
Deal found 6/22$1,268
This Qatar Airways deal was found by Cheapflights users on 6/22. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/72:47 pmBMI - CMB
2 stops24h 48mQatar Airways
Sat 10/118:20 pmCMB - BMI
2 stops38h 02mQatar Airways
Deal found 6/22$1,400
This FlightHub deal was found by Cheapflights users on 6/23. 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.
Mon 8/186:41 amSTL - CMB
2 stops33h 54mQatar Airways
Wed 8/278:20 pmCMB - STL
2 stops34h 33mQatar Airways
Deal found 6/23$1,414
This Gotogate deal was found by Cheapflights users on 6/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/194:00 pmSTL - CMB
2 stops26h 25mMultiple Airlines
Wed 8/276:25 pmCMB - STL
3 stops30h 38mMultiple Airlines
Deal found 6/23$1,565
This Gotogate deal was found by Cheapflights users on 6/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/63:20 pmSTL - CMB
3 stops34h 55mAir Canada
Thu 1/2912:45 amCMB - STL
2 stops26h 11mAir Canada
Deal found 6/23$1,637
This Ovago deal was found by Cheapflights users on 6/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/183:20 pmSTL - CMB
2 stops30h 45mEmirates
Wed 8/278:35 pmCMB - STL
3 stops35h 27mEmirates
Deal found 6/23$2,036

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Sri Lanka 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 23, 2025.
Use the filters below to find and compare flights from Illinois to Sri Lanka that are best for you.

Fly from

Illinois

Fly to

Sri Lanka

Route

Depart

Return

Price

ChicagoColombo

ORD - CMB

ORDCMB

Chicago O'Hare Intl

Mon 8/11

6:00 am-3:05 am

2 stops34h 35m

Colombo Bandaranaike Intl

Wed 10/8

3:35 am-3:05 pm

1 stop22h 00m

$1,246

ChicagoColombo

ORD - CMB

ORDCMB

Chicago O'Hare Intl

Mon 8/11

7:20 pm-3:05 am

1 stop21h 15m

Colombo Bandaranaike Intl

Wed 10/8

3:35 am-3:05 pm

1 stop22h 00m

$1,249

ChicagoColombo

ORD - CMB

ORDCMB

Chicago O'Hare Intl

Thu 7/31

12:15 pm-4:05 pm

1 stop41h 20m

Colombo Bandaranaike Intl

Sat 8/9

8:20 am-10:15 am

2 stops36h 25m

$1,250

ChicagoColombo

ORD - CMB

ORDCMB

Chicago O'Hare Intl

Tue 8/12

8:35 pm-6:30 pm

2 stops35h 25m

Colombo Bandaranaike Intl

Mon 9/1

2:55 am-3:45 pm

1 stop23h 20m

$1,255

ChicagoColombo

ORD - CMB

ORDCMB

Chicago O'Hare Intl

Wed 8/6

1:55 pm-8:30 am

1 stop32h 05m

Colombo Bandaranaike Intl

Mon 8/25

4:30 pm-8:45 am

1 stop26h 45m

$1,268

ChicagoColombo

ORD - CMB

ORDCMB

Chicago O'Hare Intl

Thu 7/10

7:50 pm-8:45 am

2 stops26h 25m

Colombo Bandaranaike Intl

Sat 8/30

9:55 pm-5:55 pm

2 stops30h 30m

$1,269

BloomingtonColombo

BMI - CMB

BMICMB

Bloomington-Normal

Tue 10/7

2:47 pm-9:00 am

2 stops31h 43m

Colombo Bandaranaike Intl

Fri 10/10

3:35 am-11:52 pm

2 stops30h 47m

$1,400

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

Mon 8/18

6:41 am-3:05 am

2 stops33h 54m

Colombo Bandaranaike Intl

Wed 8/27

8:20 pm-8:23 pm

2 stops34h 33m

$1,414

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

Tue 8/19

4:00 pm-4:55 am

2 stops26h 25m

Colombo Bandaranaike Intl

Wed 8/27

6:25 pm-2:33 pm

3 stops30h 38m

$1,565

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

Sun 7/6

3:20 pm-12:45 pm

3 stops34h 55m

Colombo Bandaranaike Intl

Thu 1/29

12:45 am-3:26 pm

2 stops26h 11m

$1,637

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 26 results
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Best time to book a flight from Illinois to Sri Lanka

Have a flexible travel schedule? Discover the best time to fly to Sri Lanka 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 Sri Lanka

What is the cheapest month to book a flight from Illinois to Sri Lanka?

Currently, September is the cheapest month in which you can book a flight from Illinois to Sri Lanka (average of $1,046). Flying from Illinois to Sri Lanka in December is currently the most expensive (average of $1,805). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to LK?

Find hourly flight availability from Illinois to Sri Lanka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 23, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Sri Lanka as you normally would.

Rainfall in Sri Lanka by month

Plan your trip to Sri Lanka by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sri Lanka ranges from 2.4 - 13.8 inches per month. October is typically the wettest month, when rainfall can reach 13.8 in. February is typically the driest time to visit Sri Lanka when rainfall is around 2.4 in.

Temperature in Sri Lanka by month

Plan your trip to Sri Lanka by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sri Lanka, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Sri Lanka

Get insights into the airlines that provide service to Sri Lanka. 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 Sri Lanka. Reviews last updated June 23, 2025.
See what other customers who have flown with Korean Air, Emirates and Singapore Airlines from Illinois to Sri Lanka have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,092 reviews

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,092 reviews
Korean Air
8.4
Very good
1,092 reviews

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Emirates
8.1
Very good
3,273 reviews
Korean Air
8.4
Very good
1,092 reviews

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,315 reviews
Korean Air
8.4
Very good
1,092 reviews

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.5
Good
902 reviews
Korean Air
8.4
Very good
1,092 reviews

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,595 reviews
Korean Air
8.4
Very good
1,092 reviews

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

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

  • What are the cheapest airlines to fly from Illinois to Sri Lanka one-way?

    The cheapest airlines for a one-way flight from Illinois to Sri Lanka are Cathay Pacific ($380), IndiGo ($480), and Air India ($503).

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

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

  • How can I find direct flights from Illinois to Sri Lanka?

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

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

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

  • What is the cheapest month to book a flight from Illinois to Sri Lanka?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Sri Lanka (average of $1,046). Flying from Illinois to Sri Lanka in December is currently the most expensive (average of $1,805). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Illinois to Sri Lanka

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Sri Lanka

Discover the top 10 airlines that operate flights from Illinois to Sri Lanka. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$711Average$843FlexibilityNo cancel feeOn-time72%
Turkish AirlinesCheapest$816Average$924FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$986Average$1,435FlexibilityNo cancel feeOn-time68%
Air CanadaCheapest$1,013Average$1,568FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,025Average$1,057FlexibilityNo cancel feeOn-time71%
Etihad AirwaysCheapest$1,163Average$1,466FlexibilityNo cancel feeOn-time75%
IndiGoCheapest$1,199Average$1,253FlexibilityNo cancel feeOn-time80%
SriLankan AirlinesCheapest$1,202Average$1,828FlexibilityNo cancel feeOn-time68%
EmiratesCheapest$1,264Average$1,758FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$2,378Average$2,581FlexibilityNo cancel feeOn-time70%

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