Cheap flights from Chicago to the United States from $34
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to the United States departing on 9/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from Chicago to United States
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Spirit Airlines flights from Chicago to United States
Our best Spirit Airlines deals on Chicago to United States flight tickets
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How to get the cheapest flight ticket from Chicago to United States
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to United States?
In general, January is the cheapest month to fly from Chicago to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $158. If you aren’t able to travel during the month of January, then book flights to United States from Chicago during September instead. Flights to United States in September, while not as cheap as those in January, still average around $158.
What is the cheapest day to depart on your flight to United States?
According to our data, Thursday is the cheapest day to fly to United States from Chicago. The lowest ticket price found for a Thursday departure recently was $251. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $366. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.
What is the cheapest time of day to depart on your flight to United States?
The cheapest time of day to fly to United States is in the evening when flights can be purchased for as low as $231. Try not to purchase tickets at noon because they tend to be around $379. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Chicago to United States flight route?
Fly from Chicago O'Hare Intl to Las Vegas Harry Reid Intl for the best Chicago - United States flight prices
How far in advance should I book a flight to United States?
You are more likely to see cheaper flights to United States from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $224 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Chicago for as low as $167 on momondo.
What cabin class options are available on Chicago to United States flights?
There are 4 cabin classes available to choose from on Chicago to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Chicago to United States?
Frontier and Spirit Airlines are the most popular carriers operating from Chicago to United States
What airlines fly to United States?
American Airlines, United Airlines and Spirit Airlines are the top three most popular airlines that fly to United States from Chicago according to our data. American Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 11 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago to United States on average per day?
544 flights are operational daily from Chicago to United States as of June 2025. The most popular departure time for this route is 6:00PM, with 38% of flights per day taking off at noon.
How many flights depart from Chicago to United States on average per week?
3,811 flights are operational weekly from Chicago to United States as of June 2025. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.
Cheap Chicago to United States flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to United States
Best Price Found | $34 |
|---|---|
Fastest flight time | 2h 05m |
Direct flights | Every day |
Airports in United States | 9 airports |
When did momondo last update prices for flights from Chicago to United States?
Prices for flights from Chicago to United States are refreshed on a daily basis.
How many operators does momondo search for flights from Chicago to United States?
As of June 2025, there are 11 operators available to choose from for flights from Chicago to United States.
How old do you have to be to fly from Chicago to United States?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to United States.
What documentation or ID do you need to fly to United States?
The travel and health documents required for your trip to United States can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United States. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Chicago to United States?
momondo data reveals that the most frequently booked plane model on the route from Chicago to United States is Boeing 737-800, representing 20.77% of all bookings. The subsequent popular models are Airbus A321neo at 12.93%, Boeing 737-900 at 8.83%, and Boeing 737 MAX 8 at 7.95%.
Best airlines flying from Chicago to United States
Compare and see reviews for airlines that fly from Chicago to United States with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $36 | Free Cancellation | Rating 6.3 8,096 reviews | |||
| PriceFrom $49 | Free Cancellation | Rating 5.9 3,293 reviews | |||
| PriceFrom $78 | Free Cancellation | Rating 7.3 2,920 reviews | |||
| PriceFrom $87 | Free Cancellation | Rating 8.0 7,969 reviews | |||
| PriceFrom $93 | Free Cancellation | Rating 7.8 2,533 reviews | |||
| PriceFrom $95 | Free Cancellation | Rating 7.2 710 reviews | |||
| PriceFrom $125 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $129 | Free Cancellation | Rating 7.4 8,852 reviews | |||
| PriceFrom $147 | Free Cancellation | Rating 6.9 340 reviews | |||
| PriceFrom $147 | Free Cancellation | Rating 8.0 4,278 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to United States?
Finding the right flight to United States from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United States quick and easy, saving you time and money.
Can I find flights from Chicago to United States with flexible booking policies on momondo?
Yes. All flights to United States from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Chicago to United States?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to United States.
I’m not ready to book a flight from Chicago to United States right now. Can momondo alert me if prices change?
If you are simply researching potential flights to United States, momondo offers a useful price alert feature which will track prices for flights to United States from Chicago and alert you when they change.