NEW YORK (AP) -- Major U.S. airlines have again raised ticket prices -- this time by $20 roundtrip -- due to higher fuel costs.

The increases are by Atlanta-based Delta Air Lines, American Airlines and United Airlines.

Their fuel surcharges now total $130 roundtrip on some flights.

So means passengers on some cheap flights could be paying more in fees and taxes than for the airfare itself.

Delta initiated the increase, which applies to most domestic routes. It is Delta's second hike in just over a week. The previous increase was quickly matched by competitors.

American spokesman Tim Smith says the carrier has matched the fuel charge on most routes.

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