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Find cheap flights from Colorado to Chicago O'Hare Airport from $37

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 8/7. 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
0 bags
zo 6/9
zo 6/16

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In the last 7 days travelers have searched 43,895,468 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

June

Cheapest flight

$37
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Denver to Chicago O'Hare Airport

FAQs for booking Colorado to Chicago O'Hare Airport flights

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

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado 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 from Colorado 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 Colorado 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 to Colorado with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado 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 from Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Colorado to Chicago O'Hare Airport?

Find which airlines fly direct from Colorado to O'Hare Intl, which days they fly and book direct flights.

Nonstop departures

Colorado to Chicago O'Hare Intl

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights

Nonstop returns

Chicago O'Hare Intl to Colorado

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights
See more direct flights

Book cheap flights from Colorado to Chicago

Recent round-trip flight deals

6/12wo
nonstopFrontier
2h 35mDEN-ORD
6/15za
nonstopFrontier
2h 54mORD-DEN
$65
7/2di
nonstopFrontier
2h 30mDEN-ORD
7/9di
nonstopFrontier
2h 45mORD-DEN
$66
5/22wo
nonstop
2h 32mDEN-ORD
5/26zo
1 stop
25h 30mORD-DEN
$113
6/17ma
1 stop
7h 51mDEN-ORD
6/18di
nonstop
2h 45mORD-DEN
$117
7/12vr
1 stopSun Country Air
23h 49mDEN-ORD
7/14zo
1 stopSun Country Air
22h 38mORD-DEN
$175
6/6do
1 stopSun Country Air
22h 41mDEN-ORD
6/10ma
1 stopSun Country Air
14h 20mORD-DEN
$185
6/16zo
1 stopDelta
7h 41mDEN-ORD
7/1ma
1 stopDelta
8h 14mORD-DEN
$196
6/20do
1 stopDelta
5h 52mDEN-ORD
7/1ma
1 stopDelta
8h 14mORD-DEN
$200
7/3wo
1 stopUnited Airlines
4h 40mCOS-ORD
7/16di
1 stopUnited Airlines
4h 23mORD-COS
$254
7/12vr
1 stopUnited Airlines
6h 20mCOS-ORD
7/15ma
nonstopUnited Airlines
2h 46mORD-COS
$260

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Recent one-way flight deals

8/7wo
nonstopFrontier
2h 36mDEN-ORD
$37
5/30do
nonstopFrontier
2h 38mDEN-ORD
$39
6/11di
nonstopAmerican Airlines
2h 35mDEN-ORD
$70
6/26wo
1 stopSun Country Air
16h 56mDEN-ORD
$78
6/24ma
1 stopSun Country Air
7h 48mDEN-ORD
$86
6/8za
nonstopAmerican Airlines
2h 34mDEN-ORD
$89
6/7vr
nonstopUnited Airlines
2h 31mDEN-ORD
$93
6/6do
1 stopDelta
5h 52mDEN-ORD
$102
6/18di
2 stopsDelta
11h 13mCOS-ORD
$103
6/18di
1 stopUnited Airlines
5h 05mCOS-ORD
$117

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Last minute flights from Colorado to O'Hare Intl

Last minute flight, train and bus deals

5/13ma
nonstopFrontier
2h 29mDEN-ORD
5/15wo
nonstopFrontier
2h 55mORD-DEN
$127
5/13ma
nonstopFrontier
2h 29mDEN-ORD
5/18za
nonstopFrontier
2h 49mORD-DEN
$128
5/13ma
nonstop
2h 29mDEN-ORD
6/7vr
multi-stop
14h 51mORD-DEN
$203
5/14di
nonstop
2h 29mDEN-ORD
5/17vr
multi-stop
22h 55mORD-DEN
$228
5/11za
nonstopAmerican Airlines
2h 28mDEN-ORD
5/11za
nonstopAmerican Airlines
2h 42mORD-DEN
$275
5/14di
nonstopAmerican Airlines
2h 28mDEN-ORD
5/14di
nonstopAmerican Airlines
2h 42mORD-DEN
$276
5/13ma
multi-stopDelta
5h 41mDEN-ORD
5/14di
multi-stopDelta
6h 37mORD-DEN
$300
5/14di
nonstopUnited Airlines
2h 32mDEN-ORD
5/16do
nonstopUnited Airlines
2h 42mORD-DEN
$301
5/14di
nonstopUnited Airlines
2h 30mDEN-ORD
5/17vr
nonstopUnited Airlines
2h 47mORD-DEN
$319
5/13ma
multi-stopDelta
5h 41mDEN-ORD
5/17vr
multi-stopDelta
4h 59mORD-DEN
$344

Search by stops

Search by airline

Search by price