Today I am looking at three FTSE 100 (INDEXFTSE: UKX) giants that I believe are set to deliver stunning returns.

A premier pick

Improving market conditions in the British motor insurance industry make Admiral (LSE: ADM) a great bet for solid dividend growth, in my opinion.

Latest data from comparison website MoneySuperMarket showed the average car insurance premium at £478 during January-March, up £50 year-on-year. A rise in the insurance premium tax isn’t helping customers, but this isn’t the whole story.

On top of this, Admiral is also enjoying splendid success on foreign shores, and saw its customer base outside the UK leap 14% in 2015 to 673,000. This propelled overseas revenues 14% higher to £232m.

Against this backcloth Admiral is expected to see earnings advances of 1% and 5% in 2016 and 2017 respectively, providing a solid base for handsome dividends.

Indeed, the City currently projects a 114.8p per share payment for this year, producing a monster 6.1% yield. And the yield moves to 6.5% for 2017 thanks to an anticipated 121.1p dividend.

Mobile mammoth

Despite the impact of severe earnings troubles, the terrific cash-generative qualities of Vodafone (LSE: VOD) has enabled the telecoms play to keep throwing out market-bashing dividends in recent years.

And with the telecoms titan now performing much better in its core regions — thanks in no small part to its multi-billion-pound Project Spring investment programme — I believe Vodafone’s dividend outlook is even stronger.

Vodafone returned to revenues growth for the first time for eight years during the period to March 2016, it advised last week, with group organic service revenues rising 2.3% year-on-year to £41bn. And critically, quarterly sales in Europe rose for the first time since 2010 during January-March, up 0.5%.

 With sales also taking off across emerging regions, the City expects Vodafone to enjoy earnings growth of 23% in 2017 and 21% next year.

 These figures are expected to support a dividend of 11.5p per share in the current period and 11.9p for 2018. Consequently Vodafone carries enormous yields of 5% and 5.2% for 2017 and 2018 respectively.

Set for take off

With passenger demand soaring still soaring, I am convinced flying ace International Consolidated Airlines (LSE: IAG) is in great shape to deliver brilliant dividends this year and beyond.

The British Airways and Iberia operator saw passenger numbers gallop 22.1% higher during January-to-March, rising to 20.4m, a result that pushed total revenues 8% higher to €5.1bn.

And IAG is steadily ramping up its route network to latch onto rising traveller demand — indeed, the business announced this month that Iberia will begin flying from Madrid to Shanghai from next month, its first destination in Asia, and to Tokyo from October.

With the travel giant also benefitting from low fuel costs, earnings are expected to spiral 50% higher in 2016, resulting in a 27.2 euro-cent-per-share dividend. And an expected 17% bottom-line surge in 2017 pushes the dividend forecast to 31.9 cents

IAG subsequently sports big-cap-beating yields of 4.1% for 2016 and 4.8% for next year.

But IAG isn't the only top-tier dividend stock currently available to investors.

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Royston Wild has no position in any shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors.