What are the cheapest airlines to fly from Dallas/Fort Worth Airport to Key Largo one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $38. Users have also found prices from $104 and $108 on Southwest and Delta, respectively.

Weekly flight availability from Dallas/Fort Worth Airport to Key Largo

The most flights from DFW to KE9 are scheduled on a Wednesday (46 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (26 on average).

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

If weather is an important factor for your trip to Key Largo, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

What are the cheapest flights from Dallas/Fort Worth Airport to Key Largo?

The cheapest flight price from Dallas/Fort Worth Airport to Key Largo is $97. On average you can expect to pay $1,287. The most popular route, (Dallas/Fort Worth - Miami), can usually be booked for $74.

What are the most reliable airlines from Dallas/Fort Worth Airport to Key Largo?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Dallas/Fort Worth Airport to Key Largo on time: Air Chathams (100%), Fiji Airways (67%), Finnair (63%).

What are the most popular airlines that fly from Dallas/Fort Worth Airport to Key Largo?

The most popular airlines flying from Dallas/Fort Worth Airport to Key Largo are Frontier, American Airlines and Southwest. Something to consider prior to booking your flight.

Can I find deals for flights from Dallas/Fort Worth to Key Largo that include hotel bookings?

Yes. In addition to deals on Dallas/Fort Worth to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dallas/Fort Worth to Key Largo?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas/Fort Worth to Key Largo.

Can I find deals for business class flights from Dallas/Fort Worth to Key Largo?

Yes. Cheapflights offers flight deals from Dallas/Fort Worth to Key Largo 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 Dallas/Fort Worth Airport to Key Largo

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Cheapflights Tip: The best prices from Dallas/Fort Worth to Key Largo are usually found in April or February, booked 84 days in advance, depart on a Friday or Thursday and return on a Friday

Find flight deals from Dallas/Fort Worth to Key Largo

Popular in	June
Cheapest in	April
Average price	$300

Highest demand for flights based on searches. 10% potential increase in price ($30 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($8 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 Dallas/Fort Worth Airport to Key Largo

Prices

Airlines

What is the cheapest time of day to fly from DFW to KE9?

Unlike in the morning, when flights are generally more expensive, you can save up to 47% on flights from Dallas/Fort Worth Airport to Key Largo by exploring options for tickets in the evening.

What is the cheapest day to fly from Dallas/Fort Worth Airport to Key Largo?

Travelers seeking maximum savings on their Dallas/Fort Worth Airport to Key Largo flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Key Largo

Read through reviews of airlines operating flights from Dallas/Fort Worth Airport to Key Largo, such as Southwest,United Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,220 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Southwest

7.9

Good

4,220 reviews

Southwest

7.9

Good

4,220 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

United Airlines

7.4

Good

10,313 reviews

Southwest

7.9

Good

4,220 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

JetBlue

7.1

Good

3,045 reviews

Southwest

7.9

Good

4,220 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

American Airlines

7.0

Good

12,136 reviews

Southwest

7.9

Good

4,220 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Frontier

5.6

Fair

2,551 reviews

Southwest

7.9

Good

4,220 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

What are the cheapest airlines to fly from Dallas/Fort Worth Airport to Key Largo one-way?
For one-way options, check prices for Frontier. According to our data, you can fly for as low as $38. Users have also found prices from $104 and $108 on Southwest and Delta, respectively.
What are the most reliable airlines from Dallas/Fort Worth Airport to Key Largo?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Dallas/Fort Worth Airport to Key Largo on time: Air Chathams (100%), Fiji Airways (67%), Finnair (63%).
What are the cheapest flights from Dallas/Fort Worth Airport to Key Largo?
The cheapest flight price from Dallas/Fort Worth Airport to Key Largo is $97. On average you can expect to pay $1,287. The most popular route, (Dallas/Fort Worth - Miami), can usually be booked for $74.
Can I find deals for flights from Dallas/Fort Worth to Key Largo that include hotel bookings?
Yes. In addition to deals on Dallas/Fort Worth to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dallas/Fort Worth to Key Largo?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas/Fort Worth to Key Largo.
Can I find deals for business class flights from Dallas/Fort Worth to Key Largo?
Yes. Cheapflights offers flight deals from Dallas/Fort Worth to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 6 airlines flying from Dallas/Fort Worth to Key Largo

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$65	Average$207	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$108	Average$443	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$108	Average$285	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$175	Average$393	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$197	Average$488	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$216	Average$350	FlexibilityNo cancel fee	On-time69%

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Cheap flights from Dallas/Fort Worth (DFW) to Key Largo, FL

Find cheap flights from Dallas/Fort Worth to Key Largo with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Dallas/Fort Worth to Key Largo

Popular in

Cheapest in

Average price

Cheapflights Insights

What is the cheapest time of day to fly from DFW to KE9?

Unlike in the morning, when flights are generally more expensive, you can save up to 47% on flights from Dallas/Fort Worth Airport to Key Largo by exploring options for tickets in the evening.

What is the cheapest day to fly from Dallas/Fort Worth Airport to Key Largo?

Travelers seeking maximum savings on their Dallas/Fort Worth Airport to Key Largo flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Dallas/Fort Worth Airport to Key Largo

The most flights from DFW to KE9 are scheduled on a Wednesday (46 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (26 on average).

Reviews of airlines servicing Key Largo

Read through reviews of airlines operating flights from Dallas/Fort Worth Airport to Key Largo, such as Southwest,United Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What are the cheapest airlines to fly from Dallas/Fort Worth Airport to Key Largo one-way?

What are the most reliable airlines from Dallas/Fort Worth Airport to Key Largo?

What are the cheapest flights from Dallas/Fort Worth Airport to Key Largo?

Can I find deals for flights from Dallas/Fort Worth to Key Largo that include hotel bookings?

How can I find direct flights from Dallas/Fort Worth to Key Largo?

Can I find deals for business class flights from Dallas/Fort Worth to Key Largo?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dallas/Fort Worth to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

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

Search flights from Dallas/Fort Worth to Key Largo by cabin class

Find flights from Dallas/Fort Worth to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dallas/Fort Worth and Key Largo flights

Browse other Dallas/Fort Worth and Key Largo flight options. Last updated on October 8, 2026.

Other flights from Dallas/Fort Worth

Browse through other flights departing from Dallas/Fort Worth. Flights are based on user searches made on Cheapflights and were last updated on October 8, 2026.

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Top 6 airlines flying from Dallas/Fort Worth to Key Largo

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