DALLAS — United Airlines is raising prices on most flights within the U.S. by up to $10 per round trip.

The airline confirmed the increase on Wednesday. J.P. Morgan analyst Jamie Baker said that as of Wednesday morning, no other major airlines had matched United's move.

United's increase ranged from $4 to $10 per round trip, depending on distance. Baker said it was the 12th attempt this year by airlines to raise fares, but only four have succeeded.

Airlines usually roll back increases if key competitors don't match them, because many consumers will switch airlines to save even a few dollars. Baker said the fate of United's increase would depend largely on whether Southwest matches it.

FareCompare.com CEO Rick Seaney said United's fare increase doesn't affect sale prices for off-peak winter travel that were introduced Tuesday by Southwest Airlines and matched by United and others. Those sales end Thursday night.

United tried to raise prices in mid-September but gave up after other carriers declined to go along. Airlines are trying to cover high fuel costs but have been more cautious on increasing prices this year than a year ago, as the economy has remained sluggish and doubts have arisen about demand for air travel.

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    Back in 2010, American Airlines <a href="http://www.huffingtonpost.com/2010/02/08/american-airlines-to-char_n_454109.html" target="_hplink">started charging $8 for blankets</a>.

  • Ryanair Boarding Pass Fees

    Songstress Lily Allen took to twitter to express anger over<a href="http://news.travel.aol.com/2011/06/06/lily-allen-twitter-ryanair-boarding-pass/" target="_hplink"> Ryanair's policy of charging passengers to print out their boarding passes</a>.

  • Spirit's Online Booking Fee

    In November 2011, Spirit Airlines <a href="http://www.huffingtonpost.com/2011/11/14/spirit-airlines-raises-on_0_n_1093430.html" target="_hplink">raised its domestic "passenger usage fee" (aka online booking fee) from $8.99 to $16.99</a> each way.

  • Fuel Fees

    Southwest Airlines <a href="http://www.huffingtonpost.com/2012/03/26/southwest-airlines-fees-fuel-costs_n_1381008.html" target="_hplink">raised its ticket prices by $4 to $10 to offset the high cost of jet fuel</a> in March 2012. Its subsidiary AirTran, plus United Airlines, Delta Air Lines, American Airlines, US Airways, Frontier Airlines and Virgin America followed suit.

  • Ryanair Emergency Row Fee

    Ryanair found itself under investigation after <a href="http://www.huffingtonpost.com/2012/03/20/ryanair-in-hot-water-over_n_1366497.html" target="_hplink">instituting a 10 pound fee to sit in the emergency row</a>.

  • Allegiant Air's Carry-On Fee

    In April 2012 the budget carrier announced a <a href="http://www.huffingtonpost.com/2012/04/02/allegiant-air-carry-on-fe_n_1397911.html" target="_hplink">$35 carry-on fee</a>.

  • Spirit's New Carry-On Fee

    A month later, low-cost Spirit Airlines <a href="http://www.huffingtonpost.com/2012/05/02/spirit-airlines-carry-on-fee_n_1472508.html" target="_hplink">upped carry-on fees to as much as $100</a>.

  • Airlines Could Charge Extra For Seats Together

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  • United's $100 Bag Fee

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  • Wizz Air's Carry-On Fee

    Carry-on fees have finally hopped the pond. <a href="http://skift.com/2012/07/09/carry-on-bag-fee-spreading-wizz-air-charge-europe/" target="_hplink">European regional carrier Wizz Air instituted a 10 Euro (about $12) fee to use the overhead bins</a>. Bags that fit under the seats still fly free.

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  • Southwest Airlines' Early Boarding Fee

    <a href="http://www.huffingtonpost.com/2013/01/22/southwest-airlines-fees_n_2525443.html?utm_hp_ref=travel#slide=more232494">Southwest passengers can pay $40 to be one of the first 15 people on the plane</a>, as of January 2013.

  • United Fare Increase

    United Airlines announced in December 2012 that it would be raising domestic fares up to <a href="http://www.huffingtonpost.com/2012/10/10/united-airlines-raises-prices-10-dollars_n_1954864.html" target="_blank">$10 per round trip</a>. While the price bump is minimal, travelers looking for the best deal could be dissuaded from purchasing the slightly more expensive tickets.

  • Allegiant Air

    One of the most profitable airlines in the U.S., <a href="http://www.huffingtonpost.com/2013/06/28/allegiant-air-fees_n_3516384.html" target="_blank">Allegiant Air</a> came into the spotlight for its length list of added-on fees. The budget airline is similar to Ryanair in wooing travelers with low-cost flights to small airports and tacking on hidden fees in every aspect of the flight. In addition to the run-of-the-mill luggage and seat-choice fees, Allegiant has fees for paying with a credit card ($8), using the overhead luggage compartments ($10-$25) and booking over the phone ($50!). (AP Photo/David Becker)

  • American Airline Fare Initiatives

    In response to "nickle-and-diming" complaints, American Airlines introduced new <a href="http://www.huffingtonpost.com/george-hobica/american-airlines-new-fare_b_2312289.html" target="_blank">fare-bundling initiatives</a>. The options -- "choice essential" and "choice plus" -- offer an array of packaged perks for one set price, rather than a la carte. While many complained about the initiative, others saw it as a way to get more for your money.

  • United Premier Access

    United Airlines rolled out "<a href="http://www.huffingtonpost.com/2013/03/01/united-premier-access-rip-off_n_2788513.html" target="_blank">Premier Access</a>" in March 2013. The program includes a designated check-in and security lines, and priority boarding and bagging handling. While the fees for the exclusive services only start at $9, travelers must <em>already</em> be elite customers.

  • Frontier Third-Party "Fees"

    In May 2013, <a href="http://www.cntraveler.com/daily-traveler/2013/05/frontier-airlines-carry-on-fees-050213?MBID=twitter_" target="_blank">Frontier announced</a> that anyone purchasing a ticket through a third-party, such as travel agents or websites like Expedia, would be subject to additional fees. In reality, the fees are actually perks (such as carry-on luggage) Frontier only offers to travelers booking through the airline directly.

  • New Alaska Airline Fees

    In July 2013, <a href="http://www.huffingtonpost.com/2013/07/09/alaska-airlines-fees_n_3568206.html" target="_blank">Alaska Airlines</a> raised its baggage checked fee from $20 per bag (for up to three bags) to $25 per bag for the first two bags, and $75 for an additional piece of luggage. The airline also upped it's ticket-change fee to $125.

  • Spirit's Potential New Fees

    Spirit Airlines is mulling the idea of tying airfare fees to demand. In October, <a href="http://www.huffingtonpost.com/2013/10/31/spirit-airlines-fees_n_4181354.html" target="_blank">the AP reported</a>: "Spirit Airlines is considering tying the fees passengers pay to check a suitcase or pick a more desirable seat to demand. On a peak travel day, for instance, the fees could be much higher. Passengers who booked a Spirit flight for this holiday season can relax however — the changes are months away, if they happen at all."

  • Virgin Atlantic Seat Reservation Fee

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