What are the cheapest airlines to fly from Dallas to Key Largo one-way?

$38 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $104 and $108, respectively.

Weekly flight availability from Dallas to Key Largo

The most flights from A78 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 to Key Largo?

Looking for the cheapest flight from Dallas to Key Largo? While on average our users pay $1,287, our data indicates the cheapest price to be $97. The most popular route (Dallas/Fort Worth - Miami), is priced around $74.

What are the most reliable airlines from Dallas to Key Largo?

Consider Air Chathams (100%), Fiji Airways (67%) or Finnair (63%) when booking your flight. These represent the most reliable airlines when flying from Dallas to Key Largo.

What are the most popular airlines that fly from Dallas to Key Largo?

The most popular airlines flying from Dallas 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 to Key Largo that include hotel bookings?

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

How can I find direct flights from Dallas 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 to Key Largo.

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

Yes. Cheapflights offers flight deals from Dallas 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 to Key Largo

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Cheapflights Tip: The best prices from Dallas 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 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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Cheapflights Insights

Everything you need to know about your flight from Dallas 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 44% on flights from Dallas to Key Largo by exploring options for tickets in the evening.

What is the cheapest day to fly from Dallas to Key Largo?

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

Reviews of airlines servicing Key Largo

Read reviews from past customers who have flown Southwest,Delta, andJetBlue from Dallas to Key Largo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,222 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

4,222 reviews

Southwest

7.9

Good

4,222 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.

Delta

7.8

Good

8,645 reviews

Southwest

7.9

Good

4,222 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

3,049 reviews

Southwest

7.9

Good

4,222 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

12,145 reviews

Southwest

7.9

Good

4,222 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

2,550 reviews

Southwest

7.9

Good

4,222 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 to Key Largo one-way?
$38 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $104 and $108, respectively.
What are the most reliable airlines from Dallas to Key Largo?
Consider Air Chathams (100%), Fiji Airways (67%) or Finnair (63%) when booking your flight. These represent the most reliable airlines when flying from Dallas to Key Largo.
What are the cheapest flights from Dallas to Key Largo?
Looking for the cheapest flight from Dallas to Key Largo? While on average our users pay $1,287, our data indicates the cheapest price to be $97. The most popular route (Dallas/Fort Worth - Miami), is priced around $74.
Can I find deals for flights from Dallas to Key Largo that include hotel bookings?
Yes. In addition to deals on Dallas to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dallas 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 to Key Largo.
Can I find deals for business class flights from Dallas to Key Largo?
Yes. Cheapflights offers flight deals from Dallas 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 to Key Largo

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$65	Average$205	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$108	Average$442	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$108	Average$285	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$175	Average$408	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$197	Average$511	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$216	Average$350	FlexibilityNo cancel fee	On-time69%

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Cheap flights from Dallas to Key Largo, FL

Find cheap flights from Dallas 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 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 44% on flights from Dallas to Key Largo by exploring options for tickets in the evening.

What is the cheapest day to fly from Dallas to Key Largo?

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

Weekly flight availability from Dallas to Key Largo

The most flights from A78 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 reviews from past customers who have flown Southwest,Delta, andJetBlue from Dallas to Key Largo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What are the cheapest airlines to fly from Dallas to Key Largo one-way?

What are the most reliable airlines from Dallas to Key Largo?

What are the cheapest flights from Dallas to Key Largo?

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

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

Can I find deals for business class flights from Dallas 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 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 to Key Largo by cabin class

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

Dallas and Key Largo flights

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

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Top 6 airlines flying from Dallas to Key Largo

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