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Cheap Flights from Chicago O'Hare International to Siem Reap–Angkor

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      Travellers and cabin class, 1 Adult, Economy

      Compare Chicago O'Hare International to Siem Reap–Angkor flight deals

      Find the cheapest month or even day of the year to fly to Siem Reap–Angkor

      Book the best Siem Reap–Angkor fare with no extra fees

      Flight deals from Chicago O'Hare International to Siem Reap–Angkor

      Looking for a cheap last-minute deal or the best return flight from Chicago O'Hare International Airport to Siem Reap–Angkor Airport? If you want to travel next month, return fares start from R 17,103. Find the lowest prices on one-way and return tickets right here.
      Siem Reap.R 8,306 per passenger.Departing Thu, 8 Oct.One-way flight with Etihad Airways.Outbound indirect flight with Etihad Airways, departs from Chicago O'Hare International on Thu, 8 Oct, arriving in Siem Reap–Angkor .Price includes taxes and charges.From R 8,306, select.
      Siem Reap.R 8,453 per passenger.Departing Tue, 23 Feb.One-way flight with Etihad Airways.Outbound indirect flight with Etihad Airways, departs from Chicago O'Hare International on Tue, 23 Feb, arriving in Siem Reap–Angkor .Price includes taxes and charges.From R 8,453, select.
      Siem Reap.R 9,146 per passenger.Departing Thu, 5 Nov.One-way flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Chicago O'Hare International on Thu, 5 Nov, arriving in Siem Reap–Angkor .Price includes taxes and charges.From R 9,146, select.
      Siem Reap.R 11,451 per passenger.Departing Fri, 4 Dec.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Fri, 4 Dec, arriving in Siem Reap–Angkor .Price includes taxes and charges.From R 11,451, select.
      Siem Reap.R 12,570 per passenger.Departing Thu, 18 Mar.One-way flight with Etihad Airways.Outbound indirect flight with Etihad Airways, departs from Chicago O'Hare International on Thu, 18 Mar, arriving in Siem Reap–Angkor .Price includes taxes and charges.From R 12,570, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Chicago O'Hare International to Siem Reap–Angkor found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Chicago O'Hare International to Siem Reap–Angkor

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago O'Hare International to Siem Reap–Angkor flights are currently cheapest in October.
      Sep
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      Oct
      from R 8,306
      Nov
      from R 9,146
      Dec
      from R 11,451
      Jan
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      Feb
      from R 8,453
      Mar
      from R 12,570
      Apr
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      May
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      Jun
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      Jul
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      Aug
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      Chicago O'Hare International to Siem Reap–Angkor : Alternative routes

      Compare routes from Chicago O'Hare International to Siem Reap below. You may find an airport to fly into that's cheaper, faster, or easier than Siem Reap–Angkor .

      Siem Reap–Angkor

      41km from central Siem Reap
      ClosestCheapest
      from R 8,306
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      Chicago to Siem Reap: Flight information

      The things to know before you go.
      Cheapest flight foundR 8,306
      Cheapest month to flyOctober

      Finding cheap flights from Chicago O'Hare International to Siem Reap–Angkor : Frequently asked questions

      The best price we found for a return flight from Chicago O'Hare International to Siem Reap–Angkor is R 17,103. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from Chicago O'Hare International to Siem Reap–Angkor . But we found flights with one or more stops from R 17,103.
      As of September 2026, there are no flights flying from Chicago O'Hare International to Siem Reap–Angkor .
      The cheapest month to fly from Chicago O'Hare International to Siem Reap–Angkor is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chicago O'Hare International Airport to Siem Reap–Angkor Airport on Monday, 19 October 2026.
      No airlines currently offer direct flights between Chicago O'Hare International Airport and Siem Reap–Angkor Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Siem Reap–Angkor but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Siem Reap is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Etihad Airways offers the cheapest flight tickets to Siem Reap–Angkor .

      Travelling from Chicago O'Hare International Airport (ORD) to Siem Reap–Angkor Airport (SAI): what you need to know

      • The timezone in Siem Reap is UTC+7, which is 13 hours ahead of Chicago.

      • Get to the airport on time so you don't miss your ORD to SAI flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

      • You can expect bigger queues during popular months such as July. Arriving up to four hours ahead of international flights and two hours for domestic departures will help ensure a smooth travel experience.

      How to find the cheapest flights from Chicago O'Hare International Airport (ORD) to Siem Reap–Angkor Airport (SAI)

      • The lowest price we've seen for a one-way Chicago O'Hare International Airport to Siem Reap–Angkor Airport flight is R 8,306. A round-trip ticket is currently R 17,103. Depending on the availability and when you book, these fares could change.

      • To pick up cheap tickets from ORD to SAI, book ahead. Airlines tend to offer lower fares when flights are first made available.

      • If you're willing to be flexible with your trip dates, use the 'Whole month' search function. It'll find the cheapest price in each month when looking for a flight from Chicago O'Hare International Airport to Siem Reap–Angkor Airport.

      • Save time looking for cheap flights from ORD to SAI by setting up a Price Alert. You'll get an email or notification on the app when a lower fare pops up.

      • Discover the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Chicago O'Hare International Airport to Siem Reap–Angkor Airport, use the 'Sort by' tool. You can also filter results by airline, arrival and departure times, and journey duration.

      Handy information about Chicago O'Hare International Airport (ORD)

      • ORD is located at 10000 West O'Hare.

      • 70% of flights that depart Chicago O'Hare International Airport make it to their destination on schedule.

      • Chicago O'Hare International Airport is about 27 kilometres from central Chicago. If you're ride-sharing, catching a taxi or driving from the centre, it'll take you 30 minutes or so to arrive, depending on the traffic.

      • Planning to take public transport? Expect a journey time of around 45 minutes.

      • Searching for a convenient hotel near ORD? If you're catching an early flight from Chicago O'Hare International Airport to Siem Reap–Angkor Airport, these stays will have you moments from your departure gate:

      Getting from Siem Reap–Angkor Airport (SAI) to central Siem Reap

      • Siem Reap–Angkor Airport is roughly 8 kilometres from the centre of Siem Reap. The drive time takes about 15 minutes.

      • It takes roughly 25 minutes if you're travelling by public transport.

      When to fly to Siem Reap–Angkor Airport (SAI)

      • The quietest month for a flight from Chicago O'Hare International Airport to Siem Reap–Angkor Airport is June, while December is the busiest. Pick the ideal time to visit Siem Reap based on whether you prefer a more fast-paced or easygoing experience.

      • When reserving your flight from Chicago O'Hare International Airport to Siem Reap–Angkor Airport, consider the type of weather you like. March is the warmest month in Siem Reap, with the temperature ranging from 22ºC (72ºF) to 38ºC (100ºF).

      • Look for cheap tickets from ORD to SAI in January if you like cooler conditions. Temperatures are at their lowest then, ranging between 18ºC (64ºF) and 33ºC (91ºF) on average.

      Explore more of Cambodia

      • You've visited Siem Reap, now it's time to explore other corners of Cambodia. Travel about 225 kilometres south-east to Phnom Penh to tick off its top sights. From Royal Palace to Genocide museum and Documentation Centre of Cambodia, there's plenty to keep you on the go.

      • Sihanoukville is another sought-after destination in Cambodia and is around 306 kilometres south of Siem Reap. No journey is complete without visiting Otres Beach, Independence Beach and Sokha Beach.

      Plan the rest of your trip from Chicago to Siem Reap

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.