$502 Find Cheap Flights from Vietnam to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to O'Hare Intl departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago, 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 Chicago, as well as popular online travel agencies
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Cheap Flights from Vietnam to O'Hare Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Vietnam to O'Hare Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Vietnam to O'Hare Intl

Mon, Sep 22 - Wed, Oct 1
Cathay Pacific Logo
11:05 am - 2:25 pmSGN-ORD
39h 20m1 stop
Cathay Pacific Logo
4:00 pm - 10:05 amORD-SGN
30h 05m1 stop
$830Cathay Pacific
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Mon, Sep 1 - Tue, Sep 9
Cathay Pacific Logo
11:05 am - 5:24 amSGN-ORD
30h 19m2 stops
Cathay Pacific Logo
6:49 pm - 10:05 amORD-SGN
27h 16m2 stops
$849Cathay Pacific
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Sat, Nov 1 - Fri, Nov 21
Cathay Pacific Logo
7:35 pm - 2:00 pmSGN-ORD
30h 25m1 stop
Cathay Pacific Logo
2:40 pm - 10:35 amORD-SGN
30h 55m1 stop
$851Cathay Pacific
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Thu, Sep 11 - Wed, Sep 24
Korean Air Logo
11:10 pm - 9:30 amHAN-ORD
22h 20m1 stop
Korean Air Logo
12:10 pm - 10:40 amORD-HAN
34h 30m1 stop
$875Korean Air
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Mon, Sep 1 - Mon, Sep 8
EVA Air Logo
3:45 pm - 8:45 pmSGN-ORD
41h 00m1 stop
EVA Air Logo
12:30 am - 9:55 amORD-SGN
21h 25m1 stop
$895EVA Air
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Mon, Sep 22 - Tue, Sep 30
EVA Air Logo
12:50 pm - 8:45 pmSGN-ORD
19h 55m1 stop
EVA Air Logo
12:30 am - 9:55 amORD-SGN
21h 25m1 stop
$896EVA Air
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Sun, Nov 2 - Sun, Nov 23
United Airlines Logo
11:05 pm - 3:10 pmSGN-ORD
29h 05m1 stop
United Airlines Logo
7:10 am - 10:55 pmORD-SGN
26h 45m2 stops
$901United Airlines
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Fri, Nov 21 - Sun, Nov 23
United Airlines Logo
7:30 am - 1:50 pmSGN-ORD
19h 20m1 stop
United Airlines Logo
9:18 pm - 10:55 pmORD-SGN
36h 37m2 stops
$902United Airlines
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Tue, Sep 23 - Thu, Oct 2
ANA Logo
7:00 am - 8:25 pmSGN-ORD
25h 25m2 stops
ANA Logo
11:50 am - 12:15 amORD-SGN
24h 25m1 stop
$915ANA
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Mon, Sep 1 - Tue, Sep 9
ANA Logo
11:15 pm - 3:10 pmSGN-ORD
27h 55m1 stop
ANA Logo
5:45 pm - 9:55 pmORD-SGN
40h 10m1 stop
$927ANA
Find Deal
Booking Insights

KAYAK's insights & trends for flights to O'Hare Intl

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

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Chicago O'Hare Intl Airport, 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 to Chicago O'Hare Intl Airport is June, where tickets cost $875 on average for return flights. On the other hand, the most expensive months are August and May, where the average cost of tickets from Vietnam is $1,944 and $1,117 respectively. For one-way flights, the best month to travel is June with an average price of $875.

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Chicago O'Hare Intl Airport, 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, you should book around 5 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.


Good to know

Low seasonNovember
Cheapest flight$502
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Ho Chi Minh City to Chicago

FAQs - booking Chicago O'Hare Airport flights

  • How far is Chicago O'Hare Intl Airport from central Chicago?

    You’ll need to travel 16 miles to reach the Chicago city center from Chicago O'Hare Intl Airport.

  • What is the cheapest day to fly to Chicago?

    Based on KAYAK data, the cheapest day to fly to Chicago 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.

  • How does KAYAK find such low prices on flights to Chicago O'Hare Airport?

    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 to Chicago O'Hare Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Chicago O'Hare Airport?

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

  • What is the Hacker Fare option on flights to Chicago O'Hare Airport?

    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 to Chicago O'Hare Airport 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 to Chicago O'Hare Airport?

    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 to Chicago O'Hare Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Chicago O'Hare Intl Airport?

    The cheapest time of day to fly to Chicago O'Hare Intl Airport is generally in the evening, when round-trip flights cost $1,083 on average. The most expensive time of day to fly to Chicago O'Hare Intl Airport is generally at night, which is peak travel time and where the average cost of a ticket is $1,294.

  • How many direct flights to Chicago O'Hare Intl Airport are there each week?

    Each week there are around 9,440 direct flights from within Vietnam to Chicago O'Hare Intl Airport. The most common day for departures is Sunday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Chicago O'Hare Airport

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago O'Hare Airport flight deals.

Reviews of the top 3 airlines serving from Vietnam to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Vietnam to Chicago. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to O'Hare Intl? 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 1222 reviews
8.1Food
8.0Entertainment
8.4Boarding
8.6Crew
8.3Comfort
Airline reviews

EVA airlines was excellent: on time or early, safe, courteous crew. Highly recommended.

10.0 ExcellentAnonymous, Jul 2025TPE - JFK
Read more EVA Air reviews

EVA airlines was excellent: on time or early, safe, courteous crew. Highly recommended.

EVA! What is going on with your food!?!? Pre pandemic I used to go to Taiwan at least twice a year and always flew EVA — the food was consistently tasty for airplane food. Post pandemic, it’s not great at all. Step it up!

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. Oh and the seats were more comfortable, had more ability to lean and the headrest was much better for flight sleeping. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

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

The flight attendants should be nicer, on my first flight I told them I’d prefer a veggie meal sometimes and then she began to lecture me about it, it was a late flight and I wanted an easy digestion meal so that I can sleep quickly. The meals were abit odd, breakfast on my last flight had eggs, oatmeal and fish, did not taste good at all, strange combination. The economy seats are very tight and crowded, not comfortable at all. Overall for the price I paid I thought I was going to get more.

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

The boarding was organized and efficient. The crew was very thoughtful and did not wake me up when meals were served. I was totally exhausted after 2 weeks of vacation with a tour group. So sleep was more important to me. The crew just left me a sticker telling me that food had been served and if I woke up hungry to contact the crew. I did have the last meal scheduled on board. Food was very mediocre. The scrambled egg and minced meat were too salty. The porridge was passable. I was disappointed because I have high expectations of food from Taiwan. I thought EVA being a Taiwan based airline would have served its customers better tasting food.

Purchased WiFi was slow to non functional. Staff was not personable or friendly. Seats were cramped. Boarding took long but I expected that.

The crew was excellent. The flight was delayed for 20 to 25 minutes. We did arrive a bit later than expected. The AC could have been better.

Very disappointed with the seat selection. During the booking, I selected seats such that my wife and I would sit next to each other. However, during check-in, we found out that the airline changed our seats and we were seated apart; and I was stuck in the middle seat with two strangers. Very disappointing experience. We would not fly ANA next time.

Luckily I just tried to sleep. But the entertainment system was awkward to operate. I hate all this stuff with apps and adding it to your phone and all. It is a nuisance. I would prefer a good magazine or newspaper in the pocket in front of me or available.

Upgrade the comfort, food and attendants. Also we arrived in Houston in the morning. The meal they served two hours before our arrival was a dinner entree. It would have been a lot nicer and much more appropriate to have had breakfast.

Wonderful I would recommend it to fly & ride with ANA.

Poor. We weren’t able to check in online (for several hours until we gave up) for no apparent reasons although our passports were loaded successfully. When we were at the airport check-in, a rep helped us at the kiosk but she disregarded the KTN provided to her so we had to come back for it after being questioned by the TSA person…

ANA gave me an amazing experience. They are very good with customer service.

Flight delayed by one day and everything was so disorganized by the airline.

All the food seemed to have onions. I don't eat onions. Anyway, everything else was great. The biggest downside was the underpricer company that purchased the tickets from ANA. Underpricer never provided the United Airlines booking number. ANA was a code share and all our flights were on United. I finally was able get booking numbers from Ujuted on X. They saved me from the upsales underwriter tried to saddle my wife and me with.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

All flight attendants could benefit by taking an international flight on Qantas Airline. Qantas attendants are much more hospitable in every way. Much superior than and attendants on any US airline.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

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.

Everything you need to know for your flight to O'Hare Intl

Information on the airport you'll fly into in Chicago

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