$500 Find Cheap Flights from Vietnam to Illinois

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KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Illinois, as well as popular online travel agencies
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KAYAK's insights & trends for flights to Illinois

Get data-powered insights and trends for flights to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Vietnam to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Vietnam to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Vietnam to Illinois is October, when tickets cost $953 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $2,113 and $1,261 respectively.

How far in advance should I book a flight from Vietnam to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Vietnam to Illinois, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.


Good to know

Low seasonOctober
High seasonJune
Cheapest flight$500
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Hanoi to Chicago O'Hare Airport

FAQs for booking flights from Vietnam to Illinois

  • How does KAYAK find such low prices on flights from Vietnam to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Vietnam to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Vietnam to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Vietnam to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Vietnam to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Vietnam to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Vietnam to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Vietnam to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Illinois?

    Based on KAYAK data, the cheapest day to fly to Illinois is Monday where round-trip tickets can be as cheap as $1,074. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $1,595 on average.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost $823 on average. Morning departures are around 44% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,188.

Top 3 airlines serving from Vietnam to Illinois

 
See real verified KAYAK customer reviews for airlines flying to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Vietnam to Illinois. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Vietnam to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
EVA AirOverall score based on 1186 reviews
8.1Food
8.3Comfort
8.6Crew
8.0Entertainment
8.4Boarding
Airline reviews

Aircraft was late getting to the gate - probably due to weather. We left the gate one hour late and had to wait another hour since we lost our slot in the takeoff queue. Our box was very wet and was falling apart when we got to Clark. It appears that luggage was exposed to weather in TPE while waiting to be loaded. Crew, however, handled the delay well and was able to provide planned service.

10.0 ExcellentDale, Apr 2025TPE - CRK
Read more EVA Air reviews

Aircraft was late getting to the gate - probably due to weather. We left the gate one hour late and had to wait another hour since we lost our slot in the takeoff queue. Our box was very wet and was falling apart when we got to Clark. It appears that luggage was exposed to weather in TPE while waiting to be loaded. Crew, however, handled the delay well and was able to provide planned service.

Sub sandwhich for a snack through mid flight and giving a bottle water was a good idea

Everything is good staff is polite and helpful flights are on time sub sandwhich for a snack was good with a bottle of water only thing maybe more variety of food like breakfast or dinner depends on the time

seats are pitched well. you don't feel too tight.

For the price, it was better than other airlines; quality of food and service was very good.

Great but I am not sure why I was placed in zone 4 for boarding despite being an Infinity Member??? Can you explain online. Thanks

Clean plane, friendly crew, mostly on-time departure. Negativo since there were no snacks offered. Cold drinks only was fine due to turbulence, but nothing to eat? Really?

Excellent food. Good service. Crammed Premium Economy seats. I Asked to change seats during check in. They told me the flight was fully booked. But on board I saw empty seats where I could have been easily relocated.

The food is quite mediocre. I had spaghetti and the tomato based sauce was quite salty and there were no other flavors, no spices used in the sauce.

friendly and professional cabin staff... seems cold and a bit aloof...

My wife and I liked almost everything about ANA except for the economy seat space and the cold breakfast (croissant which seemed to just come out of the fridge)

The overall experience was ok, though there was certainly room for improvement. My husband was asked to check his carry-on bag at the gate due to claims that the flight was “full.” However, upon boarding, we observed ample overhead space and several empty rows of seats. This made the request appear unnecessary and caused some discomfort, particularly as he was the only passenger singled out for this procedure.

When booking the flight i picked it because it said flying with ana even on our e-ticket as well but I showed up to the airport and I flew with united. I have flew with both airlines before and I prefer ana for the food quality and comfortable. So I was disappointed in that outcome and felt the food gave me minor ibs. The whole thing was missing leading with not getting what I thought I was paying for. Felt a bait and switched. Do not have confidence in using this app in the future trips

The flight was smooth, but there were not enough options for meals and I was given beef when I do not eat beef. The flight going was much better because we received more snacks.

Thankful for the staff who provided blankets cause the plane was quite cold and no way to adjust the airflow in the seats next to the bathroom.

Uh there was a delay, because of the weather. And what took usually an hour flight to Louisville took about 6+ hours. Flight got canceled

I had to get rerouted because the weather delayed my flight enough to miss both of my connecting flights. I select nearly 2 hours on customer service trying to get rerouted and had to miss my first plane which took my luggage to San Francisco. Luckily, customer service sent me to the same airport but I had to ride 12 hours in economy after I paid extra for premium economy. Totally sucks that I overpaid. Customer service and airplane crew were great and really helpful though. Although I still hate how small the seat was, especially since I'm smaller than average, I can't imagine how much it would suck for an average sized person.

Flight attendant took good care of my mom as she boarded on and off the aircraft from her wheelchair. I did not care much for the food nor the movie options Available. I appreciated the increased legroom available in economy. This was one of the main reasons we chose the airline. Overall, the good value and I would fly again.

I stopped flying with United back in the nineties. Today's experience reminded me of why.

ANA was fine. LAX has some major problems. I needed a wheelchair and BKK and Narita were very good. I do have to remember NOT to tip in Japan. LAX however, was poor. first the attendant wasn't able to push me. The next person left me stranded in several locations. They would just leave me where ever they felt like; No logic to these locations. finally when we cleared immigration, they (there were several people who didn't seem to care about their job) left me in a large room with a baggage carousal. I tried to locate my luggage to no avail. meanwhile my connection was getting closer. I finally talked with Emir from ANA and he showed me to my carousal which was located a few rooms away from where LAX personnel stranded me. Emir also found a good wheelchair attendant to take me the rest of the way. Without Emir from ANA, I would still be stranded, given the amount of care shown by the first wheelchair attendants.

So far so good but food and entertainment are not available for this flight

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

Very modern plane. Good seat spacing. Meals were good. Screens had tons of movies and worked

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

Flight was delayed two hours. No snacks and no tv screens. My bag got stuck in Chicago

Book cheap flights from Vietnam to Illinois

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Illinois found on KAYAK in the last 72 hours.
8/22Fri
2 stops
30h 10mSGN-ORD
9/2Tue
2 stops
28h 02mORD-SGN
$849
9/9Tue
1 stopCathay Pacific
32h 05mSGN-ORD
9/24Wed
1 stopCathay Pacific
30h 05mORD-SGN
$852
9/8Mon
1 stopEVA Air
30h 55mSGN-ORD
9/23Tue
1 stopEVA Air
21h 25mORD-SGN
$891
5/26Mon
2 stopsDelta
36h 49mSGN-ORD
6/8Sun
2 stopsDelta
26h 56mORD-SGN
$916
6/14Sat
2 stopsDelta
34h 59mHAN-ORD
6/21Sat
2 stopsDelta
26h 26mORD-HAN
$936
8/22Fri
1 stopEVA Air
20h 20mSGN-ORD
9/1Mon
1 stopEVA Air
23h 10mORD-SGN
$954
8/22Fri
2 stopsUnited Airlines
31h 10mSGN-ORD
9/2Tue
2 stopsUnited Airlines
38h 12mORD-SGN
$1,196
8/17Sun
1 stopUnited Airlines
19h 55mSGN-ORD
8/26Tue
1 stopUnited Airlines
21h 05mORD-SGN
$1,250
8/17Sun
1 stopANA
19h 55mSGN-ORD
8/26Tue
1 stopANA
40h 10mORD-SGN
$1,262
8/16Sat
1 stopANA
26h 30mSGN-ORD
8/26Tue
1 stopANA
21h 05mORD-SGN
$1,827

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Illinois found on KAYAK in the last 72 hours.
5/29Thu
3 stops
59h 20mHAN-ORD
$500
5/13Tue
3 stops
39h 01mSGN-ORD
$523
10/16Thu
1 stopEVA Air
30h 55mSGN-ORD
$561
9/1Mon
1 stopUnited Airlines
19h 55mSGN-ORD
$562
5/10Sat
1 stopUnited Airlines
27h 55mSGN-ORD
$563
5/31Sat
1 stopCathay Pacific
36h 40mSGN-ORD
$574
5/29Thu
1 stopCathay Pacific
39h 20mSGN-ORD
$580
9/28Sun
1 stopEVA Air
20h 40mHAN-ORD
$587
5/28Wed
1 stopANA
26h 15mHAN-ORD
$1,253
6/24Tue
2 stopsANA
31h 45mHAN-ORD
$1,323

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Everything you need to know for your flight to Illinois

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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