How popular is this Irvine to Denver flight route?

This flight path from Irvine to Denver Intl was viewed by 494 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines to fly from Irvine to Denver one-way?

One-way options have recently been found by users for as low as $29 on Frontier. Other airlines that offer cheap prices include Delta from $77 and United Airlines from $78 one-way.

Weekly flight availability from Irvine to Denver

The most flights from IR9 to DEN are scheduled on a Thursday (100 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (63 on average).

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What are the cheapest flights from Irvine to Denver?

On average you can expect to pay $600 for a flight from Irvine to Denver. The cheapest flight overall is $78 while the most popular route, (Los Angeles - Denver Intl) is currently priced at $74.

What are the most reliable airlines from Irvine to Denver?

No one likes to see their flight delayed. When booking a flight from Irvine to Denver consider choosing STARLUX Airlines (100%), Asiana Airlines (87%) or Qantas Airways (87%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Irvine to Denver?

When booking a flight from Irvine to Denver, you may want to consider flying on Frontier, United Airlines or Southwest as they are the most popular for this route.

What airport do you fly into for flights to Denver from Irvine?

If you book a flight to Denver from Irvine, you will be flying to Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver. There are 84 flights from Irvine to Denver Intl per day from 7 different airlines.

Can I find deals for flights from Irvine to Denver that include hotel bookings?

Yes. In addition to deals on Irvine to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Irvine to Denver?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Denver.

Can I find deals for business class flights from Irvine to Denver?

Yes. Cheapflights offers flight deals from Irvine to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from Irvine to Denver

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Cheapflights Tip: The best prices from Irvine to Denver Intl are usually found in February or January, booked 53 days in advance, depart on a Saturday or Wednesday and return on a Thursday

Find flight deals from Irvine to Denver

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	July
Cheapest in	February
Average price	$238

Provider with most accurate pricing for Los Angeles-Denver Intl flight deals.

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Provider most trusted by Cheapflights users for Los Angeles-Denver Intl flights.

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Highest demand for flights based on searches. 11% potential increase in price ($32 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Everything you need to know about your flight from Irvine to Denver

Prices

Airlines

What is the cheapest time of day to fly from IR9 to DEN?

One of the essential ways to save on airfare from Irvine to Denver is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 27% on airfare.

What is the cheapest day to fly from Irvine to Denver?

Travelers seeking maximum savings on their Irvine to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Denver

Read through reviews of airlines operating flights from Irvine to Denver, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,224 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

7.9

Good

4,224 reviews

Southwest

7.9

Good

4,224 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Delta

7.8

Good

8,646 reviews

Southwest

7.9

Good

4,224 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

United Airlines

7.4

Good

10,322 reviews

Southwest

7.9

Good

4,224 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

American Airlines

7.0

Good

12,146 reviews

Southwest

7.9

Good

4,224 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Frontier

5.6

Fair

2,551 reviews

Southwest

7.9

Good

4,224 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

What airport do you fly into for flights to Denver from Irvine?
If you book a flight to Denver from Irvine, you will be flying to Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver. There are 84 flights from Irvine to Denver Intl per day from 7 different airlines.
How popular is this Irvine to Denver flight route?
This flight path from Irvine to Denver Intl was viewed by 494 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines to fly from Irvine to Denver one-way?
One-way options have recently been found by users for as low as $29 on Frontier. Other airlines that offer cheap prices include Delta from $77 and United Airlines from $78 one-way.
What are the most reliable airlines from Irvine to Denver?
No one likes to see their flight delayed. When booking a flight from Irvine to Denver consider choosing STARLUX Airlines (100%), Asiana Airlines (87%) or Qantas Airways (87%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Irvine to Denver?
On average you can expect to pay $600 for a flight from Irvine to Denver. The cheapest flight overall is $78 while the most popular route, (Los Angeles - Denver Intl) is currently priced at $74.
Can I find deals for flights from Irvine to Denver that include hotel bookings?
Yes. In addition to deals on Irvine to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Irvine to Denver?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Denver.
Can I find deals for business class flights from Irvine to Denver?
Yes. Cheapflights offers flight deals from Irvine to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top 7 airlines flying from Irvine to Denver

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$29	Average$180	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$98	Average$269	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$139	Average$295	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$154	Average$349	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$157	Average$345	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$173	Average$332	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$300	Average$537	FlexibilityNo cancel fee	On-time75%

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Cheap flights from Irvine, CA to Denver (DEN)

Find cheap flights from Irvine to Denver with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Irvine to Denver

Most accurate provider

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Popular in

Cheapest in

Average price

Cheapflights Insights

What is the cheapest time of day to fly from IR9 to DEN?

One of the essential ways to save on airfare from Irvine to Denver is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 27% on airfare.

What is the cheapest day to fly from Irvine to Denver?

Travelers seeking maximum savings on their Irvine to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Irvine to Denver

The most flights from IR9 to DEN are scheduled on a Thursday (100 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (63 on average).

Reviews of airlines servicing Denver

Read through reviews of airlines operating flights from Irvine to Denver, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to Denver from Irvine?

How popular is this Irvine to Denver flight route?

What are the cheapest airlines to fly from Irvine to Denver one-way?

What are the most reliable airlines from Irvine to Denver?

What are the cheapest flights from Irvine to Denver?

Can I find deals for flights from Irvine to Denver that include hotel bookings?

How can I find direct flights from Irvine to Denver?

Can I find deals for business class flights from Irvine to Denver?

Traveling to a place near Denver?

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Complete your trip

Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

Other flights to Denver

Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 10, 2026.

Search flights from Irvine to Denver by cabin class

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Top 7 airlines flying from Irvine to Denver

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